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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
12542 vulnerabilities reference this CWE, most recent first.
GHSA-PHJ8-C2Q3-Q844
Vulnerability from github – Published: 2026-10-14 00:31 – Updated: 2026-10-14 15:32Use after free in Media in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-110171"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T22:17:37Z",
"severity": "HIGH"
},
"details": "Use after free in Media in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-phj8-c2q3-q844",
"modified": "2026-10-14T15:32:11Z",
"published": "2026-10-14T00:31:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110171"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_01668083673.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/570675082"
}
],
"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-PHJ8-VJ5R-3WXM
Vulnerability from github – Published: 2022-05-24 19:17 – Updated: 2022-05-24 19:17Use after free in Task Manager in Google Chrome prior to 94.0.4606.54 allowed an attacker who convinced a user to enage in a series of user gestures to potentially exploit heap corruption via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-37959"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-08T22:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Task Manager in Google Chrome prior to 94.0.4606.54 allowed an attacker who convinced a user to enage in a series of user gestures to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-phj8-vj5r-3wxm",
"modified": "2022-05-24T19:17:08Z",
"published": "2022-05-24T19:17:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37959"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_21.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1229625"
},
{
"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://www.debian.org/security/2022/dsa-5046"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-PHMX-CH7W-7Q9J
Vulnerability from github – Published: 2026-09-08 21:34 – Updated: 2026-09-08 21:34Acrobat Reader is affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2026-81985"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T21:18:45Z",
"severity": "HIGH"
},
"details": "Acrobat Reader is affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-phmx-ch7w-7q9j",
"modified": "2026-09-08T21:34:32Z",
"published": "2026-09-08T21:34:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81985"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb26-141.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PHP2-HMPJ-QVCW
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2022-10-31 19:00In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver, aka CID-c52873e5a1ef.
{
"affected": [],
"aliases": [
"CVE-2019-19530"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-03T16:15:00Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver, aka CID-c52873e5a1ef.",
"id": "GHSA-php2-hmpj-qvcw",
"modified": "2022-10-31T19:00:33Z",
"published": "2022-05-24T17:02:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19530"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.10"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c52873e5a1ef72f845526d9f6a50704433f9c625"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/12/03/4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PHV3-FH26-68PQ
Vulnerability from github – Published: 2026-09-16 00:31 – Updated: 2026-09-16 00:31Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
{
"affected": [],
"aliases": [
"CVE-2026-85893"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-15T23:19:12Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.",
"id": "GHSA-phv3-fh26-68pq",
"modified": "2026-09-16T00:31:33Z",
"published": "2026-09-16T00:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85893"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85893"
}
],
"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-PHWJ-RPRQ-35PP
Vulnerability from github – Published: 2026-06-19 16:37 – Updated: 2026-06-19 16:37Summary
Nokogiri’s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node, Nokogiri::XML::Attr#value= could free the underlying native child node while the wrapper remained reachable through the document node cache. A later use of the freed child node or a Ruby GC mark could dereference an invalid pointer, causing an invalid read and a possible segfault.
Nokogiri 1.19.4 preserves any already-wrapped attribute child nodes before replacing the attribute value.
JRuby is not affected.
Severity
The Nokogiri maintainers have evaluated this as low severity. Reaching it requires an unusual API-usage pattern that does not arise during normal use. The application must directly access an attribute's child node and then replace that same attribute's value via Attr#value= or #content=. Nokogiri 1.19.4 makes this pattern safe with no change to the public API. Already-wrapped attribute child nodes are preserved before the value is replaced.
Mitigation
Upgrade to Nokogiri 1.19.4 or later.
As a workaround, avoid accessing attribute child nodes directly via Attr#child or similar before mutating the same attribute’s value.
Credit
This issue was responsibly reported by Zheng Yu from depthfirst.com.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "nokogiri"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-825"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-19T16:37:46Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "### Summary\n\nNokogiri\u2019s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node, `Nokogiri::XML::Attr#value=` could free the underlying native child node while the wrapper remained reachable through the document node cache. A later use of the freed child node or a Ruby GC mark could dereference an invalid pointer, causing an invalid read and a possible segfault.\n\nNokogiri 1.19.4 preserves any already-wrapped attribute child nodes before replacing the attribute value.\n\nJRuby is not affected.\n\n### Severity\n\nThe Nokogiri maintainers have evaluated this as low severity. Reaching it requires an unusual API-usage pattern that does not arise during normal use. The application must directly access an attribute\u0027s child node and then replace that same attribute\u0027s value via `Attr#value=` or `#content=`. Nokogiri 1.19.4 makes this pattern safe with no change to the public API. Already-wrapped attribute child nodes are preserved before the value is replaced.\n\n### Mitigation\n\nUpgrade to Nokogiri 1.19.4 or later.\n\nAs a workaround, avoid accessing attribute child nodes directly via `Attr#child` or similar before mutating the same attribute\u2019s value.\n\n### Credit\n\nThis issue was responsibly reported by Zheng Yu from depthfirst.com.",
"id": "GHSA-phwj-rprq-35pp",
"modified": "2026-06-19T16:37:46Z",
"published": "2026-06-19T16:37:46Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-phwj-rprq-35pp"
},
{
"type": "PACKAGE",
"url": "https://github.com/sparklemotion/nokogiri"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`"
}
GHSA-PHX8-Q4FX-GRJV
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33Windows Graphics Component Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-43509"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:13Z",
"severity": "HIGH"
},
"details": "Windows Graphics Component Elevation of Privilege Vulnerability",
"id": "GHSA-phx8-q4fx-grjv",
"modified": "2024-10-08T18:33:15Z",
"published": "2024-10-08T18:33:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43509"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43509"
}
],
"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-PHXW-MVC4-W6C3
Vulnerability from github – Published: 2022-05-13 01:37 – Updated: 2022-05-13 01:37This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 8.3.1. 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 modDate attribute of Annotation objects. 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 under the context of the current process. Was ZDI-CAN-5028.
{
"affected": [],
"aliases": [
"CVE-2017-14836"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-12-20T14:29:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 8.3.1. 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 modDate attribute of Annotation objects. 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 under the context of the current process. Was ZDI-CAN-5028.",
"id": "GHSA-phxw-mvc4-w6c3",
"modified": "2022-05-13T01:37:35Z",
"published": "2022-05-13T01:37:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14836"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://zerodayinitiative.com/advisories/ZDI-17-880"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PJ29-HGRW-877W
Vulnerability from github – Published: 2026-10-13 21:32 – Updated: 2026-10-13 21:32Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-100212"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:17:41Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-pj29-hgrw-877w",
"modified": "2026-10-13T21:32:32Z",
"published": "2026-10-13T21:32:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100212"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100212"
}
],
"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-PJ47-JF4R-P87V
Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2022-05-24 19:04Use after free in Bookmarks 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-2021-30529"
],
"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 Bookmarks 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-pj47-jf4r-p87v",
"modified": "2022-05-24T19:04:11Z",
"published": "2022-05-24T19:04:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30529"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1195278"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54"
}
],
"schema_version": "1.4.0",
"severity": []
}
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.