Vulnerability-Lookup

OESA-2026-4059 (CVE-2026-77159)

Vulnerability from osv_openeuler – Published: 2026-09-25 01:27 – Updated: 2026-09-25 01:27 – Source website

Summary

libvirt security update

Details

Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). The main package includes the libvirtd server exporting the virtualization support.

Security Fix(es):

A symlink-following flaw was found in libvirt's qemuTPMEmulatorPrepareHost() function. The function uses a path-based chown() on the swtpm logfile without checking for symbolic links. A local attacker with access to the swtpm account can replace the logfile with a symlink, causing libvirtd (running as root) to transfer ownership of an arbitrary file to the swtpm user.(CVE-2026-77159)

Severity

5.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-77159	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libvirt-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-admin-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-bash-completion-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-client-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-config-network-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-interface-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-network-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-nodedev-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-core-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-disk-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-gluster-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-mpath-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-rbd-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-scsi-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-kvm-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-qemu-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-debuginfo-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-debugsource-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-devel-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-docs-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-libs-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-lock-sanlock-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-nss-6.2.0-30.oe2003sp4.aarch64.rpm",
          "libvirt-wireshark-6.2.0-30.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "libvirt-6.2.0-30.oe2003sp4.src.rpm"
        ],
        "x86_64": [
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          "libvirt-admin-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-bash-completion-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-client-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-config-network-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-interface-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-network-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-nodedev-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-core-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-disk-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-gluster-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-mpath-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-rbd-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-scsi-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-kvm-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-qemu-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-debuginfo-6.2.0-30.oe2003sp4.x86_64.rpm",
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          "libvirt-devel-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-docs-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-libs-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-lock-sanlock-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-nss-6.2.0-30.oe2003sp4.x86_64.rpm",
          "libvirt-wireshark-6.2.0-30.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
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        "name": "libvirt",
        "purl": "pkg:rpm/openEuler/libvirt\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.2.0-30.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libvirt-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-admin-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-bash-completion-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-client-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-config-network-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-interface-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-network-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-nodedev-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-core-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-disk-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-gluster-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-mpath-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-rbd-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-scsi-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-kvm-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-daemon-qemu-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-debuginfo-6.2.0-74.oe2203sp4.aarch64.rpm",
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          "libvirt-devel-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-docs-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-libs-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-lock-sanlock-6.2.0-74.oe2203sp4.aarch64.rpm",
          "libvirt-nss-6.2.0-74.oe2203sp4.aarch64.rpm",
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          "libvirt-client-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-config-network-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-74.oe2203sp4.x86_64.rpm",
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          "libvirt-daemon-driver-nodedev-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-74.oe2203sp4.x86_64.rpm",
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          "libvirt-daemon-driver-storage-gluster-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-74.oe2203sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-74.oe2203sp4.x86_64.rpm",
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          "libvirt-daemon-driver-storage-rbd-6.2.0-74.oe2203sp4.x86_64.rpm",
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          "libvirt-lock-sanlock-6.2.0-74.oe2203sp4.x86_64.rpm",
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        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libvirt",
        "purl": "pkg:rpm/openEuler/libvirt\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
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            {
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            },
            {
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            }
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          "type": "ECOSYSTEM"
        }
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    },
    {
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          "libvirt-client-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-common-9.10.0-45.oe2403sp1.aarch64.rpm",
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          "libvirt-daemon-config-nwfilter-9.10.0-45.oe2403sp1.aarch64.rpm",
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          "libvirt-daemon-driver-nodedev-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-nwfilter-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-qemu-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-secret-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-core-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-disk-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-gluster-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-logical-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-mpath-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-rbd-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-driver-storage-scsi-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-kvm-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-lock-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-log-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-plugin-lockd-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-plugin-sanlock-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-proxy-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-daemon-qemu-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-debuginfo-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-debugsource-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-devel-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-docs-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-libs-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-nss-9.10.0-45.oe2403sp1.aarch64.rpm",
          "libvirt-wireshark-9.10.0-45.oe2403sp1.aarch64.rpm"
        ],
        "src": [
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        ],
        "x86_64": [
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          "libvirt-client-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-common-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-config-network-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-config-nwfilter-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-interface-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-network-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-nodedev-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-nwfilter-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-qemu-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-secret-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-core-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-disk-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-gluster-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-logical-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-mpath-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-rbd-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-driver-storage-scsi-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-kvm-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-lock-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-log-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-plugin-lockd-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-plugin-sanlock-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-proxy-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-daemon-qemu-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-debuginfo-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-debugsource-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-devel-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-docs-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-libs-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-nss-9.10.0-45.oe2403sp1.x86_64.rpm",
          "libvirt-wireshark-9.10.0-45.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "libvirt",
        "purl": "pkg:rpm/openEuler/libvirt\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
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          "libvirt-client-9.10.0-46.oe2403sp3.aarch64.rpm",
          "libvirt-daemon-9.10.0-46.oe2403sp3.aarch64.rpm",
          "libvirt-daemon-common-9.10.0-46.oe2403sp3.aarch64.rpm",
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  "database_specific": {
    "severity": "Medium"
  },
  "details": "Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). The main package includes the libvirtd server exporting the virtualization support.\r\n\r\nSecurity Fix(es):\n\nA symlink-following flaw was found in libvirt\u0026apos;s qemuTPMEmulatorPrepareHost() function. The function uses a path-based chown() on the swtpm logfile without checking for symbolic links. A local attacker with access to the swtpm account can replace the logfile with a symlink, causing libvirtd (running as root) to transfer ownership of an arbitrary file to the swtpm user.(CVE-2026-77159)",
  "id": "OESA-2026-4059",
  "modified": "2026-09-25T01:27:51Z",
  "published": "2026-09-25T01:27:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4059"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77159"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libvirt security update",
  "upstream": [
    "CVE-2026-77159"
  ]
}

CVE-2026-77159 (GCVE-0-2026-77159)

Vulnerability from cvelistv5 – Published: 2026-09-11 10:32 – Updated: 2026-09-15 15:40

Title

Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership change via symlink

Summary

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 15:39 UTC

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following

Assigner

redhat redhat root Scorecard

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-77159	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2531811	issue-trackingx_refsource_REDHAT
https://gitlab.com/libvirt/libvirt/-/work_items/909

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-11 00:00

Credits

Red Hat would like to thank Suraj Theekshana for reporting this issue.

Show details on NVD website

JSON

To clipboard

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        {
          "lang": "en",
          "time": "2026-09-11T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-09-11T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership change via symlink",
      "workarounds": [
        {
          "lang": "en",
          "value": "On Red Hat Enterprise Linux, SELinux in enforcing mode (the default) confines the swtpm process to the swtpm_t domain, which restricts the creation of symlinks to arbitrary file types and limits the scope of any ownership change, reducing the practical impact of this flaw. Ensure SELinux is not disabled or set to permissive mode."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-61: UNIX Symbolic Link (Symlink) Following"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-77159",
    "datePublished": "2026-09-11T10:32:29.772Z",
    "dateReserved": "2026-08-20T14:42:32.943Z",
    "dateUpdated": "2026-09-15T15:40:56.022Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2026-4059 (CVE-2026-77159)

CVE-2026-77159 (GCVE-0-2026-77159)

Tags

Sightings

Nomenclature

Related by attack behaviour