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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9813 vulnerabilities reference this CWE, most recent first.
CVE-2021-28550 (GCVE-0-2021-28550)
Vulnerability from cvelistv5 – Published: 2021-09-02 16:07 – Updated: 2025-10-21 23:25
VLAI
EPSS
VEX
Title
Adobe Acrobat Reader use after free vulnerability could lead to arbitrary code execution
Summary
Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve 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.
Severity
9.6 (Critical)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ 2020.001.30020
(custom)
Affected: unspecified , ≤ 2021.001.20150 (custom) Affected: unspecified , ≤ 2017.011.30194 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2021-05-11 00:00
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CVE-2021-27649 (GCVE-0-2021-27649)
Vulnerability from cvelistv5 – Published: 2021-06-23 09:50 – Updated: 2024-09-16 23:05
VLAI
EPSS
VEX
Summary
Use after free vulnerability in file transfer protocol component in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via unspecified vectors.
Severity
9.8 (Critical)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.synology.com/security/advisory/Synolo… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Synology | DiskStation Manager (DSM) |
Affected:
unspecified , < 6.2.3-25426-3
(custom)
|
Date Public
2021-06-23 00:00
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CVE-2021-27646 (GCVE-0-2021-27646)
Vulnerability from cvelistv5 – Published: 2021-03-12 06:45 – Updated: 2024-09-16 18:54
VLAI
EPSS
VEX
Summary
Use After Free vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.
Severity
9.8 (Critical)
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.synology.com/security/advisory/Synolo… | x_refsource_CONFIRM |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Synology | Synology DiskStation Manager (DSM) |
Affected:
unspecified , < 6.2.3-25426-3
(custom)
|
Date Public
2021-03-12 00:00
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CVE-2021-27268 (GCVE-0-2021-27268)
Vulnerability from cvelistv5 – Published: 2021-03-30 14:35 – Updated: 2024-08-03 20:48
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.1.0.37527. 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 U3D objects in PDF 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-12295.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.foxitsoftware.com/support/security-bu… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Foxit | PhantomPDF |
Affected:
10.1.0.37527
|
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CVE-2021-27267 (GCVE-0-2021-27267)
Vulnerability from cvelistv5 – Published: 2021-03-30 14:35 – Updated: 2024-08-03 20:48
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.1.0.37527. 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 U3D objects in PDF 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-12294.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.foxitsoftware.com/support/security-bu… | x_refsource_MISC |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Foxit | PhantomPDF |
Affected:
10.1.0.37527
|
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CVE-2021-25394 (GCVE-0-2021-25394)
Vulnerability from cvelistv5 – Published: 2021-06-11 14:45 – Updated: 2025-10-21 23:25
VLAI
EPSS
VEX
Summary
A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.
Severity
6.4 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://security.samsungmobile.com/securityUpdate… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Mobile | Samsung Mobile Devices |
Affected:
O(8.x), P(9.0), Q(10.0), R(11.0) , < SMR MAY-2021 Release 1
(custom)
|
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CVE-2021-24037 (GCVE-0-2021-24037)
Vulnerability from cvelistv5 – Published: 2021-06-15 22:00 – Updated: 2024-08-03 19:21
VLAI
EPSS
VEX
Summary
A use after free in hermes, while emitting certain error messages, prior to commit d86e185e485b6330216dee8e854455c694e3a36e allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/facebook/hermes/commit/d86e185… | x_refsource_CONFIRM |
| https://www.facebook.com/security/advisories/CVE-… | x_refsource_CONFIRM |
Impacted products
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CVE-2021-23134 (GCVE-0-2021-23134)
Vulnerability from cvelistv5 – Published: 2021-05-12 22:45 – Updated: 2024-09-17 03:38
VLAI
EPSS
VEX
Title
Linux kernel llcp_sock_bind/connect use-after-free
Summary
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/n… | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2021062… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux Kernel | Linux Kernel |
Affected:
unspecified , < 5.12.4
(custom)
|
Date Public
2021-05-11 00:00
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CVE-2021-22940 (GCVE-0-2021-22940)
Vulnerability from cvelistv5 – Published: 2021-08-16 00:00 – Updated: 2025-04-30 22:24
VLAI
EPSS
VEX
Summary
Node.js before 16.6.1, 14.17.5, and 12.22.5 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NodeJS | Node |
Affected:
4.0 , < 4.*
(semver)
Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 10.0 , < 10.* (semver) Affected: 11.0 , < 11.* (semver) Affected: 12.0 , < 12.22.5 (semver) Affected: 13.0 , < 13.* (semver) Affected: 14.0 , < 14.17.5 (semver) Affected: 15.0 , < 15.* (semver) Affected: 16.0 , < 16.6.2 (semver) |
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CVE-2021-22930 (GCVE-0-2021-22930)
Vulnerability from cvelistv5 – Published: 2021-10-07 00:00 – Updated: 2025-04-30 22:24
VLAI
EPSS
VEX
Summary
Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NodeJS | Node |
Affected:
4.0 , < 4.*
(semver)
Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 10.0 , < 10.* (semver) Affected: 11.0 , < 11.* (semver) Affected: 12.0 , < 12.22.4 (semver) Affected: 13.0 , < 13.* (semver) Affected: 14.0 , < 14.17.4 (semver) Affected: 15.0 , < 15.* (semver) Affected: 16.0 , < 16.6.0 (semver) |
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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.