Common Weakness Enumeration
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
12181 vulnerabilities reference this CWE, most recent first.
GHSA-9Q3V-FMW3-9539
Vulnerability from github – Published: 2022-05-24 16:54 – Updated: 2022-05-24 16:54
VLAI
Details
Adobe Acrobat and Reader versions, 2019.012.20035 and earlier, 2019.012.20035 and earlier, 2017.011.30142 and earlier, 2017.011.30143 and earlier, 2017.011.30142 and earlier, 2015.006.30497 and earlier, and 2015.006.30498 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2019-8030"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-08-20T20:15:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Acrobat and Reader versions, 2019.012.20035 and earlier, 2019.012.20035 and earlier, 2017.011.30142 and earlier, 2017.011.30143 and earlier, 2017.011.30142 and earlier, 2015.006.30497 and earlier, and 2015.006.30498 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-9q3v-fmw3-9539",
"modified": "2022-05-24T16:54:13Z",
"published": "2022-05-24T16:54:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8030"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb19-41.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-9Q3V-XM5R-GQ3G
Vulnerability from github – Published: 2026-09-14 21:31 – Updated: 2026-09-15 21:31
VLAI
Details
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-65402"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-14T21:17:23Z",
"severity": "MODERATE"
},
"details": "A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination.",
"id": "GHSA-9q3v-xm5r-gq3g",
"modified": "2026-09-15T21:31:06Z",
"published": "2026-09-14T21:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65402"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149034"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149035"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149036"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149037"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149038"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149041"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149042"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/149043"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9Q52-M6P9-H4QP
Vulnerability from github – Published: 2022-05-24 17:12 – Updated: 2022-05-24 17:12
VLAI
Details
Use after free in audio in Google Chrome prior to 80.0.3987.149 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2020-6449"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-03-23T16:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in audio in Google Chrome prior to 80.0.3987.149 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-9q52-m6p9-h4qp",
"modified": "2022-05-24T17:12:15Z",
"published": "2022-05-24T17:12:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6449"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1059686"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2DDNOAGIX5D77TTHT6YPMVJ5WTXTCQEI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JWANFIR3PYAL5RJQ4AO3ZS2DYMSF2ZGZ"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202003-53"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4645"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00028.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00037.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/172843/Chrome-WebAudio-Use-After-Free.html"
}
],
"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-9Q5H-RR4R-FVXG
Vulnerability from github – Published: 2022-05-14 00:57 – Updated: 2022-05-14 00:57
VLAI
Details
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-7054"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-15T20:29:00Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.",
"id": "GHSA-9q5h-rr4r-fvxg",
"modified": "2022-05-14T00:57:15Z",
"published": "2022-05-14T00:57:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7054"
},
{
"type": "WEB",
"url": "https://irssi.org/security/irssi_sa_2018_02.txt"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3590-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4046-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4162"
},
{
"type": "WEB",
"url": "http://openwall.com/lists/oss-security/2018/02/15/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9Q5W-QFPH-C2X4
Vulnerability from github – Published: 2026-09-29 15:31 – Updated: 2026-09-30 18:33
VLAI
Details
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-100790"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-29T13:17:44Z",
"severity": "HIGH"
},
"details": "Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.",
"id": "GHSA-9q5w-qfph-c2x4",
"modified": "2026-09-30T18:33:11Z",
"published": "2026-09-29T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100790"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2072432"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-100"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-101"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-102"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-103"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-97"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-98"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-99"
}
],
"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-9Q5X-C58M-XCP8
Vulnerability from github – Published: 2026-07-01 00:34 – Updated: 2026-07-01 15:35
VLAI
Details
Use after free in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Critical)
Severity
8.1 (High)
{
"affected": [],
"aliases": [
"CVE-2026-13774"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T23:16:52Z",
"severity": "HIGH"
},
"details": "Use after free in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Critical)",
"id": "GHSA-9q5x-c58m-xcp8",
"modified": "2026-07-01T15:35:00Z",
"published": "2026-07-01T00:34:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13774"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/506558270"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9Q6R-HPGQ-GFQM
Vulnerability from github – Published: 2022-05-24 16:47 – Updated: 2024-04-04 00:54
VLAI
Details
An invalid write of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-20355"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-10T17:29:00Z",
"severity": "CRITICAL"
},
"details": "An invalid write of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.",
"id": "GHSA-9q6r-hpgq-gfqm",
"modified": "2024-04-04T00:54:48Z",
"published": "2022-05-24T16:47:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20355"
},
{
"type": "WEB",
"url": "https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-mg_http_free_proto_data_cgi.png"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9Q7C-3V6C-W3WW
Vulnerability from github – Published: 2025-12-17 21:30 – Updated: 2025-12-17 21:30
VLAI
Details
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Tahoe 26.2, iOS 26.2 and iPadOS 26.2, Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3. Processing maliciously crafted web content may lead to an unexpected process crash.
Severity
4.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-43536"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-17T21:16:12Z",
"severity": "MODERATE"
},
"details": "A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Tahoe 26.2, iOS 26.2 and iPadOS 26.2, Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3. Processing maliciously crafted web content may lead to an unexpected process crash.",
"id": "GHSA-9q7c-3v6c-w3ww",
"modified": "2025-12-17T21:30:50Z",
"published": "2025-12-17T21:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43536"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125884"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125885"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125886"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125892"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-9Q8Q-5M78-FC9R
Vulnerability from github – Published: 2025-11-11 18:30 – Updated: 2025-11-11 18:30
VLAI
Details
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-62205"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-11T18:15:46Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.",
"id": "GHSA-9q8q-5m78-fc9r",
"modified": "2025-11-11T18:30:22Z",
"published": "2025-11-11T18:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62205"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62205"
}
],
"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-9Q9X-3H5P-QV27
Vulnerability from github – Published: 2026-09-01 15:31 – Updated: 2026-09-02 00:31
VLAI
Details
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-84123"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-01T13:20:06Z",
"severity": "HIGH"
},
"details": "Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.",
"id": "GHSA-9q9x-3h5p-qv27",
"modified": "2026-09-02T00:31:28Z",
"published": "2026-09-01T15:31:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84123"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2060047"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-82"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-85"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-86"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-88"
}
],
"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"
}
]
}
Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
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.