CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
11157 vulnerabilities reference this CWE, most recent first.
GHSA-FCCQ-6QX5-MCJ9
Vulnerability from github – Published: 2026-05-12 18:30 – Updated: 2026-05-12 18:30Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-40410"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-12T18:17:18Z",
"severity": "HIGH"
},
"details": "Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-fccq-6qx5-mcj9",
"modified": "2026-05-12T18:30:45Z",
"published": "2026-05-12T18:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40410"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40410"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCF3-FGRP-9HP7
Vulnerability from github – Published: 2026-09-29 21:33 – Updated: 2026-09-29 21:33Use after free in Views in Google Chrome prior to 154.0.8037.92 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-102316"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-29T20:17:14Z",
"severity": "CRITICAL"
},
"details": "Use after free in Views in Google Chrome prior to 154.0.8037.92 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-fcf3-fgrp-9hp7",
"modified": "2026-09-29T21:33:24Z",
"published": "2026-09-29T21:33:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102316"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01807488085.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/560238698"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCG6-9HQQ-Q764
Vulnerability from github – Published: 2022-05-14 02:45 – Updated: 2025-04-20 03:48A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.
{
"affected": [],
"aliases": [
"CVE-2017-15271"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-11-15T16:29:00Z",
"severity": "MODERATE"
},
"details": "A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.",
"id": "GHSA-fcg6-9hqq-q764",
"modified": "2025-04-20T03:48:29Z",
"published": "2022-05-14T02:45:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15271"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/43144"
},
{
"type": "WEB",
"url": "https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/541518/100/0/threaded"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCG7-9X44-GX43
Vulnerability from github – Published: 2023-07-21 21:30 – Updated: 2024-08-22 21:31A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.
If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.
We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.
{
"affected": [],
"aliases": [
"CVE-2023-3776"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-21T21:15:11Z",
"severity": "HIGH"
},
"details": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\n\n",
"id": "GHSA-fcg7-9x44-gx43",
"modified": "2024-08-22T21:31:27Z",
"published": "2023-07-21T21:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3776"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f"
},
{
"type": "WEB",
"url": "https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240202-0003"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5480"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5492"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCGJ-QG8M-28WX
Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2022-05-24 19:04Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-30543"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-07T20:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-fcgj-qg8m-28wx",
"modified": "2022-05-24T19:04:09Z",
"published": "2022-05-24T19:04:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30543"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1203607"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WKQDE3PWDKASAPSUJYMOQGL73L3YQRFS"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-FCHF-WVCC-QF9G
Vulnerability from github – Published: 2026-06-19 06:31 – Updated: 2026-06-19 06:31libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).
{
"affected": [],
"aliases": [
"CVE-2026-56131"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-19T06:17:10Z",
"severity": "MODERATE"
},
"details": "libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).",
"id": "GHSA-fchf-wvcc-qf9g",
"modified": "2026-06-19T06:31:56Z",
"published": "2026-06-19T06:31:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56131"
},
{
"type": "WEB",
"url": "https://github.com/libexpat/libexpat/pull/1267"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-FCHG-HVG9-677J
Vulnerability from github – Published: 2022-10-19 19:00 – Updated: 2022-10-21 19:01An issue was discovered in Bento4 1.6.0-639. There is a bad free in the component AP4_HdlrAtom::~AP4_HdlrAtom() which allows attackers to cause a Denial of Service (DoS) via a crafted input.
{
"affected": [],
"aliases": [
"CVE-2022-43033"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-19T14:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in Bento4 1.6.0-639. There is a bad free in the component AP4_HdlrAtom::~AP4_HdlrAtom() which allows attackers to cause a Denial of Service (DoS) via a crafted input.",
"id": "GHSA-fchg-hvg9-677j",
"modified": "2022-10-21T19:01:17Z",
"published": "2022-10-19T19:00:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43033"
},
{
"type": "WEB",
"url": "https://github.com/axiomatic-systems/Bento4/issues/765"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCHQ-4VH7-VRJV
Vulnerability from github – Published: 2024-04-02 21:30 – Updated: 2024-04-02 21:30Foxit PDF Reader AcroForm User-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22821.
{
"affected": [],
"aliases": [
"CVE-2024-30358"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T21:15:48Z",
"severity": "HIGH"
},
"details": "Foxit PDF Reader AcroForm User-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22821.",
"id": "GHSA-fchq-4vh7-vrjv",
"modified": "2024-04-02T21:30:30Z",
"published": "2024-04-02T21:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30358"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-330"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCJQ-FFHG-M7HF
Vulnerability from github – Published: 2026-09-15 15:32 – Updated: 2026-09-20 03:30Use-after-free in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
{
"affected": [],
"aliases": [
"CVE-2026-92029"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-15T13:16:54Z",
"severity": "HIGH"
},
"details": "Use-after-free in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.",
"id": "GHSA-fcjq-ffhg-m7hf",
"modified": "2026-09-20T03:30:23Z",
"published": "2026-09-15T15:32:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92029"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2068445"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-90"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-91"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-92"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-93"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-94"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-95"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-96"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FCM2-QHF9-7WVV
Vulnerability from github – Published: 2023-09-04 03:30 – Updated: 2024-04-04 07:24In imgsys_cmdq, there is a possible use after free due to a missing valid range checking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07340433; Issue ID: ALPS07340350.
{
"affected": [],
"aliases": [
"CVE-2023-20849"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-04T03:15:11Z",
"severity": "MODERATE"
},
"details": "In imgsys_cmdq, there is a possible use after free due to a missing valid range checking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07340433; Issue ID: ALPS07340350.",
"id": "GHSA-fcm2-qhf9-7wvv",
"modified": "2024-04-04T07:24:57Z",
"published": "2023-09-04T03:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20849"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/September-2023"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.