Vulnerability-Lookup

OESA-2026-4192 (CVE-2026-80274)

Vulnerability from osv_openeuler – Published: 2026-09-30 13:47 – Updated: 2026-09-30 13:47 – Source website

Summary

bind security update

Details

Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols and provides an openly redistributable reference implementation of the major components of the Domain Name System. This package includes the components to operate a DNS server.

Security Fix(es):

If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-80274)

A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-81563)

If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-81736)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-80274	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-81563	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-81736	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "bind-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-chroot-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-debuginfo-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-debugsource-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-devel-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-dnssec-utils-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-libs-9.18.21-14.oe2403sp3.aarch64.rpm",
          "bind-utils-9.18.21-14.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "bind-dnssec-doc-9.18.21-14.oe2403sp3.noarch.rpm",
          "bind-license-9.18.21-14.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "bind-9.18.21-14.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "bind-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-chroot-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-debuginfo-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-debugsource-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-devel-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-dnssec-utils-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-libs-9.18.21-14.oe2403sp3.x86_64.rpm",
          "bind-utils-9.18.21-14.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "bind",
        "purl": "pkg:rpm/openEuler/bind\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.18.21-14.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols and provides an openly redistributable reference implementation of the major components of the Domain Name System. This package includes the components to operate a DNS server.\r\n\r\nSecurity Fix(es):\n\nIf a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-80274)\n\nA BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-81563)\n\nIf a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.(CVE-2026-81736)",
  "id": "OESA-2026-4192",
  "modified": "2026-09-30T13:47:28Z",
  "published": "2026-09-30T13:47:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4192"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80274"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81563"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81736"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bind security update",
  "upstream": [
    "CVE-2026-80274",
    "CVE-2026-81563",
    "CVE-2026-81736"
  ]
}

CVE-2026-80274 (GCVE-0-2026-80274)

Vulnerability from cvelistv5 – Published: 2026-09-16 14:07 – Updated: 2026-09-17 17:37

Title

Validating resolver can abort while caching a mismatched NOQNAME proof

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:37 UTC

CWE

CWE-617 - Reachable Assertion

Assigner

isc mitre root Scorecard

References

3 references

URL	Tags
https://kb.isc.org/docs/cve-2026-80274	vendor-advisory
https://downloads.isc.org/isc/bind9/9.20.29	patch
https://downloads.isc.org/isc/bind9/9.21.26	patch

Impacted products

1 product

Vendor	Product	Version
ISC	BIND 9	Affected: 9.11.0 , ≤ 9.18.50 (custom) Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind::::::::

Date Public

2026-09-16 00:00

Credits

ISC would like to thank hythyt for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
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      "cpeApplicability": [
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      ],
      "solutions": [
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      "source": {
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      "workarounds": [
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}

CVE-2026-81563 (GCVE-0-2026-81563)

Vulnerability from cvelistv5 – Published: 2026-09-16 14:00 – Updated: 2026-09-17 17:47

Title

SVCB AliasMode additional-data error leaks qpcache references

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:47 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

isc mitre root Scorecard

References

3 references

URL	Tags
https://kb.isc.org/docs/cve-2026-81563	vendor-advisory
https://downloads.isc.org/isc/bind9/9.20.29	patch
https://downloads.isc.org/isc/bind9/9.21.26	patch

Impacted products

1 product

Vendor	Product	Version
ISC	BIND 9	Affected: 9.18.0 , ≤ 9.18.50 (custom) Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.18.11-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind::::::::

Date Public

2026-09-16 00:00

Credits

ISC would like to thank Samy Medjahed/Ap4sh for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "metrics": [
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                "id": "CVE-2026-81563",
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          "lang": "en",
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        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "SVCB AliasMode additional-data error leaks qpcache references",
      "workarounds": [
        {
          "lang": "en",
          "value": "No workarounds known."
        }
      ],
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    "datePublished": "2026-09-16T14:00:04.129Z",
    "dateReserved": "2026-08-27T05:57:37.544Z",
    "dateUpdated": "2026-09-17T17:47:23.137Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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CVE-2026-81736 (GCVE-0-2026-81736)

Vulnerability from cvelistv5 – Published: 2026-09-16 13:44 – Updated: 2026-09-17 18:46

Title

Remote CPU denial of service through cached SVCB/HTTPS AliasMode trees

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 18:45 UTC

CWE

CWE-1050 - Excessive Platform Resource Consumption within a Loop

Assigner

isc mitre root Scorecard

References

3 references

URL	Tags
https://kb.isc.org/docs/cve-2026-81736	vendor-advisory
https://downloads.isc.org/isc/bind9/9.20.29	patch
https://downloads.isc.org/isc/bind9/9.21.26	patch

Impacted products

1 product

Vendor	Product	Version
ISC	BIND 9	Affected: 9.18.0 , ≤ 9.18.50 (custom) Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.18.11-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind:::::::: cpe:2.3:a:isc:bind::::::::

Date Public

2026-09-16 00:00

Credits

ISC would like to thank Henrique Pereira for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

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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.

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CVE-2026-81736 (GCVE-0-2026-81736)

Tags

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Nomenclature

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