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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9854 vulnerabilities reference this CWE, most recent first.
GHSA-46HX-3226-HMHX
Vulnerability from github – Published: 2026-04-14 18:30 – Updated: 2026-04-14 18:30Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2026-33115"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-14T18:17:33Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.",
"id": "GHSA-46hx-3226-hmhx",
"modified": "2026-04-14T18:30:42Z",
"published": "2026-04-14T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33115"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33115"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-46PV-VQ66-38GM
Vulnerability from github – Published: 2022-05-13 01:33 – Updated: 2022-05-13 01:33This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. 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 the mandatory property of a TimeField. 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-6502.
{
"affected": [],
"aliases": [
"CVE-2018-17652"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-01-24T04:29:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. 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 the mandatory property of a TimeField. 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-6502.",
"id": "GHSA-46pv-vq66-38gm",
"modified": "2022-05-13T01:33:56Z",
"published": "2022-05-13T01:33:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17652"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-18-1222"
}
],
"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-46R6-92JG-22JG
Vulnerability from github – Published: 2024-11-09 00:30 – Updated: 2026-06-09 19:09wasm3 139076a contains a Use-After-Free in ForEachModule.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pywasm3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-27530"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-09T19:09:07Z",
"nvd_published_at": "2024-11-08T22:15:15Z",
"severity": "HIGH"
},
"details": "wasm3 139076a contains a Use-After-Free in ForEachModule.",
"id": "GHSA-46r6-92jg-22jg",
"modified": "2026-06-09T19:09:07Z",
"published": "2024-11-09T00:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27530"
},
{
"type": "WEB",
"url": "https://github.com/wasm3/wasm3/issues/458"
},
{
"type": "WEB",
"url": "https://gist.github.com/haruki3hhh/94dd274487b58e037bcc8839dc88b203"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pywasm3/PYSEC-2024-306.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/wasm3/pywasm3"
},
{
"type": "WEB",
"url": "https://github.com/wasm3/pywasm3/blob/main/wasm3/m3_env.c#L202"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "pywasm3 contains a Use-After-Free in ForEachModule"
}
GHSA-46RH-MCF3-6V59
Vulnerability from github – Published: 2022-12-22 21:30 – Updated: 2025-04-15 18:31The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
{
"affected": [],
"aliases": [
"CVE-2022-34484"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-617"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-22T20:15:00Z",
"severity": "HIGH"
},
"details": "The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox \u003c 102, Firefox ESR \u003c 91.11, Thunderbird \u003c 102, and Thunderbird \u003c 91.11.",
"id": "GHSA-46rh-mcf3-6v59",
"modified": "2025-04-15T18:31:31Z",
"published": "2022-12-22T21:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34484"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1763634%2C1772651"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-24"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-25"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-26"
}
],
"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-46VQ-M3CV-FVRH
Vulnerability from github – Published: 2022-05-24 17:38 – Updated: 2022-05-24 17:38The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.
{
"affected": [],
"aliases": [
"CVE-2020-26972"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-07T14:15:00Z",
"severity": "CRITICAL"
},
"details": "The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox \u003c 84.",
"id": "GHSA-46vq-m3cv-fvrh",
"modified": "2022-05-24T17:38:12Z",
"published": "2022-05-24T17:38:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26972"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1671382"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2020-54"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-46W7-W3P6-27QR
Vulnerability from github – Published: 2024-02-29 18:30 – Updated: 2024-02-29 18:30Acrobat Reader versions 20.005.30539, 23.008.20470 and earlier are 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-2024-20765"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-29T17:15:07Z",
"severity": "HIGH"
},
"details": "Acrobat Reader versions 20.005.30539, 23.008.20470 and earlier are 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-46w7-w3p6-27qr",
"modified": "2024-02-29T18:30:59Z",
"published": "2024-02-29T18:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20765"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb24-07.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-46X6-9622-7Q2G
Vulnerability from github – Published: 2026-07-01 00:34 – Updated: 2026-07-01 15:35Use after free in DevTools in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Low)
{
"affected": [],
"aliases": [
"CVE-2026-14091"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T23:17:21Z",
"severity": "HIGH"
},
"details": "Use after free in DevTools in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Low)",
"id": "GHSA-46x6-9622-7q2g",
"modified": "2026-07-01T15:35:08Z",
"published": "2026-07-01T00:34:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14091"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/513208773"
}
],
"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-46XG-2692-FH7X
Vulnerability from github – Published: 2024-04-17 12:32 – Updated: 2026-06-01 18:31In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: af_bluetooth: Fix deadlock
Attemting to do sock_lock on .recvmsg may cause a deadlock as shown bellow, so instead of using sock_sock this uses sk_receive_queue.lock on bt_sock_ioctl to avoid the UAF:
INFO: task kworker/u9:1:121 blocked for more than 30 seconds. Not tainted 6.7.6-lemon #183 Workqueue: hci0 hci_rx_work Call Trace: __schedule+0x37d/0xa00 schedule+0x32/0xe0 __lock_sock+0x68/0xa0 ? __pfx_autoremove_wake_function+0x10/0x10 lock_sock_nested+0x43/0x50 l2cap_sock_recv_cb+0x21/0xa0 l2cap_recv_frame+0x55b/0x30a0 ? psi_task_switch+0xeb/0x270 ? finish_task_switch.isra.0+0x93/0x2a0 hci_rx_work+0x33a/0x3f0 process_one_work+0x13a/0x2f0 worker_thread+0x2f0/0x410 ? __pfx_worker_thread+0x10/0x10 kthread+0xe0/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30
{
"affected": [],
"aliases": [
"CVE-2024-26886"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-17T11:15:10Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: af_bluetooth: Fix deadlock\n\nAttemting to do sock_lock on .recvmsg may cause a deadlock as shown\nbellow, so instead of using sock_sock this uses sk_receive_queue.lock\non bt_sock_ioctl to avoid the UAF:\n\nINFO: task kworker/u9:1:121 blocked for more than 30 seconds.\n Not tainted 6.7.6-lemon #183\nWorkqueue: hci0 hci_rx_work\nCall Trace:\n \u003cTASK\u003e\n __schedule+0x37d/0xa00\n schedule+0x32/0xe0\n __lock_sock+0x68/0xa0\n ? __pfx_autoremove_wake_function+0x10/0x10\n lock_sock_nested+0x43/0x50\n l2cap_sock_recv_cb+0x21/0xa0\n l2cap_recv_frame+0x55b/0x30a0\n ? psi_task_switch+0xeb/0x270\n ? finish_task_switch.isra.0+0x93/0x2a0\n hci_rx_work+0x33a/0x3f0\n process_one_work+0x13a/0x2f0\n worker_thread+0x2f0/0x410\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe0/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n \u003c/TASK\u003e",
"id": "GHSA-46xg-2692-fh7x",
"modified": "2026-06-01T18:31:18Z",
"published": "2024-04-17T12:32:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26886"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0625d7c240b307b78640dcd823cb738cb900a8ba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/60673f442984fe689d4127a5dd4be414247b3d67"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cb8adca52f306563d958a863bb0cbae9c184d1ae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4746-8222-R3VF
Vulnerability from github – Published: 2023-02-22 21:30 – Updated: 2023-03-03 06:30Use after free in Web Payments API in Google Chrome on Android prior to 110.0.5481.177 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2023-0927"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-22T20:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Web Payments API in Google Chrome on Android prior to 110.0.5481.177 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-4746-8222-r3vf",
"modified": "2023-03-03T06:30:19Z",
"published": "2023-02-22T21:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0927"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2023/02/stable-channel-desktop-update_22.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1414738"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-17"
}
],
"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-4748-CF36-H6FF
Vulnerability from github – Published: 2022-05-24 16:47 – Updated: 2022-10-13 19:00This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.1.16828. 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 removeField method when processing 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 in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-8162.
{
"affected": [],
"aliases": [
"CVE-2019-6766"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-03T19:29:00Z",
"severity": "MODERATE"
},
"details": "This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.1.16828. 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 removeField method when processing 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 in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-8162.",
"id": "GHSA-4748-cf36-h6ff",
"modified": "2022-10-13T19:00:16Z",
"published": "2022-05-24T16:47:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-6766"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-19-440"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"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.