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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
10829 vulnerabilities reference this CWE, most recent first.
CVE-2026-48090 (GCVE-0-2026-48090)
Vulnerability from cvelistv5 – Published: 2026-06-26 18:03 – Updated: 2026-07-08 19:42
VLAI
EPSS
VEX
Title
Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, the HTTP OAuth2 filter (envoy.filters.http.oauth2) can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late AsyncClient completion can still invoke OAuth2Filter methods that use StreamDecoderFilterCallbacks after that object’s lifetime has ended, causing undefined behavior, worker crashes (availability loss), and use-after-free / invalid-vptr failures under AddressSanitizer. This is a memory-safety / lifetime issue in the data plane, not a trivial config bug. Remote code execution is not claimed here; the primary demonstrated impact is DoS via crash and UB; any further impact would be deployment- and allocator-dependent. This vulnerability is fixed in 1.37.5 and 1.38.3.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 12:01 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/envoyproxy/envoy/security/advi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.38.0, < 1.38.3
Affected: >= 1.37.0, < 1.37.5 |
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CVE-2026-47955 (GCVE-0-2026-47955)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 00:00 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47924 (GCVE-0-2026-47924)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:36
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 and earlier are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 20:36 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47921 (GCVE-0-2026-47921)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47920 (GCVE-0-2026-47920)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47919 (GCVE-0-2026-47919)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47918 (GCVE-0-2026-47918)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47917 (GCVE-0-2026-47917)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:36
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 00:00 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47916 (GCVE-0-2026-47916)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-47915 (GCVE-0-2026-47915)
Vulnerability from cvelistv5 – Published: 2026-06-09 20:01 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
Acrobat Reader | Use After Free (CWE-416)
Summary
Acrobat Reader versions 24.001.30365, 26.001.21651 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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 03:59 UTC
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 26.001.21651
(custom)
Unaffected: 26.001.21662 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30365
(custom)
Unaffected: 24.001.30383 (custom) |
Date Public
2026-06-09 17:00
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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.