CWE-416
Weakness 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Mapping guidance
This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Relationships and members
Modes of introduction
Detection methods
Fuzzing
Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.
Effectiveness: High
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Effectiveness: High
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Content history
Suggested rephrase for extended description
Contributed or reviewed taxonomy mappings for ISA/IEC 62443
Provided diagram to improve CWE usability
updated Potential_Mitigations, Time_of_Introduction
added/updated white box definitions
updated Applicable_Platforms, Common_Consequences, Relationships, Observed_Example, Other_Notes, Taxonomy_Mappings
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updated Potential_Mitigations
updated Observed_Examples, Relationships
updated Alternate_Terms, Common_Consequences, Description, Observed_Examples, Other_Notes, Potential_Mitigations, Relationships
updated Description
updated Common_Consequences
updated Demonstrative_Examples
updated Relationships, Taxonomy_Mappings
updated References, Relationships
updated Relationships, Taxonomy_Mappings
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updated Demonstrative_Examples, Relationships, Taxonomy_Mappings, White_Box_Definitions
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updated Observed_Examples, Relationships
updated Description, Relationships, Taxonomy_Mappings
updated Detection_Factors, Relationships, Time_of_Introduction
updated Mapping_Notes, Relationships
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updated Taxonomy_Mappings
updated Alternate_Terms, Common_Consequences, Description, Diagram, Potential_Mitigations, Relationships, Weakness_Ordinalities
updated Relationships
updated Observed_Examples
updated Functional_Areas
updated Applicable_Platforms, Detection_Factors, References, Relationships
updated Common_Consequences, Observed_Examples
updated Observed_Examples, References
12544 vulnerabilities reference this CWE, most recent first.
GHSA-Q98M-FJJG-RXW5
Vulnerability from github – Published: 2024-02-26 18:30 – Updated: 2024-06-27 15:30In the Linux kernel, the following vulnerability has been resolved:
drivers/amd/pm: fix a use-after-free in kv_parse_power_table
When ps allocated by kzalloc equals to NULL, kv_parse_power_table frees adev->pm.dpm.ps that allocated before. However, after the control flow goes through the following call chains:
kv_parse_power_table |-> kv_dpm_init |-> kv_dpm_sw_init |-> kv_dpm_fini
The adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its first free in kv_parse_power_table and causes a use-after-free bug.
{
"affected": [],
"aliases": [
"CVE-2023-52469"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-26T16:27:48Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/amd/pm: fix a use-after-free in kv_parse_power_table\n\nWhen ps allocated by kzalloc equals to NULL, kv_parse_power_table\nfrees adev-\u003epm.dpm.ps that allocated before. However, after the control\nflow goes through the following call chains:\n\nkv_parse_power_table\n |-\u003e kv_dpm_init\n |-\u003e kv_dpm_sw_init\n\t |-\u003e kv_dpm_fini\n\nThe adev-\u003epm.dpm.ps is used in the for loop of kv_dpm_fini after its\nfirst free in kv_parse_power_table and causes a use-after-free bug.",
"id": "GHSA-q98m-fjjg-rxw5",
"modified": "2024-06-27T15:30:38Z",
"published": "2024-02-26T18:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52469"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/28dd788382c43b330480f57cd34cde0840896743"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3426f059eacc33ecc676b0d66539297e1cfafd02"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/35fa2394d26e919f63600ce631e6aefc95ec2706"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/520e213a0b97b64735a13950e9371e0a5d7a5dc3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8a27d9d9fc9b5564b8904c3a77a7dea482bfa34e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8b55b06e737feb2a645b0293ea27e38418876d63"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/95084632a65d5c0d682a83b55935560bdcd2a1e3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b6dcba02ee178282e0d28684d241e0b8462dea6a"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.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-Q98W-G5J8-3X6H
Vulnerability from github – Published: 2025-03-03 12:30 – Updated: 2025-03-03 12:30Memory corruption while calling the NPU driver APIs concurrently.
{
"affected": [],
"aliases": [
"CVE-2025-21424"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-03T11:15:15Z",
"severity": "HIGH"
},
"details": "Memory corruption while calling the NPU driver APIs concurrently.",
"id": "GHSA-q98w-g5j8-3x6h",
"modified": "2025-03-03T12:30:33Z",
"published": "2025-03-03T12:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21424"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2025-bulletin.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-Q98W-PVCR-Q4MW
Vulnerability from github – Published: 2022-05-24 16:54 – Updated: 2022-05-24 16:54Adobe 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-2019-8024"
],
"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-q98w-pvcr-q4mw",
"modified": "2022-05-24T16:54:13Z",
"published": "2022-05-24T16:54:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8024"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb19-41.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q993-4V6G-M56M
Vulnerability from github – Published: 2026-01-15 21:31 – Updated: 2026-04-27 18:31CWE-416: Use After Free vulnerability that could cause remote code execution when the end user imports the malicious project file (SSD file) into Rapsody.
{
"affected": [],
"aliases": [
"CVE-2025-13845"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-15T19:16:02Z",
"severity": "HIGH"
},
"details": "CWE-416: Use After Free vulnerability that could cause remote code execution when the end user imports the malicious project file (SSD file) into Rapsody.",
"id": "GHSA-q993-4v6g-m56m",
"modified": "2026-04-27T18:31:58Z",
"published": "2026-01-15T21:31:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13845"
},
{
"type": "WEB",
"url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-013-04\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2026-013-04.pdf"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-Q998-JMGQ-H339
Vulnerability from github – Published: 2026-10-13 21:36 – Updated: 2026-10-13 21:36Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-88119"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:21:30Z",
"severity": "HIGH"
},
"details": "Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-q998-jmgq-h339",
"modified": "2026-10-13T21:36:39Z",
"published": "2026-10-13T21:36:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88119"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88119"
}
],
"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-Q9C5-RC4C-8FC9
Vulnerability from github – Published: 2026-08-25 21:31 – Updated: 2026-08-26 18:31Use after free in UI in Google Chrome prior to 152.0.7977.65 allowed a local attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-79245"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-25T21:18:18Z",
"severity": "HIGH"
},
"details": "Use after free in UI in Google Chrome prior to 152.0.7977.65 allowed a local attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: Medium)",
"id": "GHSA-q9c5-rc4c-8fc9",
"modified": "2026-08-26T18:31:47Z",
"published": "2026-08-25T21:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79245"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/520179360"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q9CH-89R8-Q9W2
Vulnerability from github – Published: 2022-05-24 17:20 – Updated: 2022-05-24 17:20In multiple functions in DrmPlugin.cpp, there is a possible use after free due to a race condition. This could lead to local code execution with System execution privileges required. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-137878930
{
"affected": [],
"aliases": [
"CVE-2020-0126"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-11T15:15:00Z",
"severity": "MODERATE"
},
"details": "In multiple functions in DrmPlugin.cpp, there is a possible use after free due to a race condition. This could lead to local code execution with System execution privileges required. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-137878930",
"id": "GHSA-q9ch-89r8-q9w2",
"modified": "2022-05-24T17:20:09Z",
"published": "2022-05-24T17:20:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0126"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2020-06-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q9CQ-RJ77-7RPR
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2026-45486"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:23Z",
"severity": "HIGH"
},
"details": "Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.",
"id": "GHSA-q9cq-rj77-7rpr",
"modified": "2026-06-09T18:30:50Z",
"published": "2026-06-09T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45486"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45486"
}
],
"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-Q9FG-RVGP-P6JG
Vulnerability from github – Published: 2024-05-08 00:31 – Updated: 2024-05-08 00:31Bentley View SKP File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley View. 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 parsing of SKP files. 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 arbitrary code in the context of the current process. Was ZDI-CAN-18981.
{
"affected": [],
"aliases": [
"CVE-2022-43652"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-07T23:15:14Z",
"severity": "LOW"
},
"details": "Bentley View SKP File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley View. 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 parsing of SKP files. 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 arbitrary code in the context of the current process. Was ZDI-CAN-18981.",
"id": "GHSA-q9fg-rvgp-p6jg",
"modified": "2024-05-08T00:31:15Z",
"published": "2024-05-08T00:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43652"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-347"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q9FP-C34Q-3GPP
Vulnerability from github – Published: 2026-09-29 15:31 – Updated: 2026-09-30 18:33Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
{
"affected": [],
"aliases": [
"CVE-2026-100757"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-29T13:17:40Z",
"severity": "HIGH"
},
"details": "Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.",
"id": "GHSA-q9fp-c34q-3gpp",
"modified": "2026-09-30T18:33:07Z",
"published": "2026-09-29T15:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100757"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2049352"
},
{
"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"
}
]
}
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.