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CVE-2021-39859

nvd nist
Published: Sep 6, 2023Modified: Jun 17, 2026

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5.5
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Exploitability: 1.8 / Impact: 3.6
Source: psirt@adobe.com (Secondary)

Description

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (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 bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected (8)

Adobe
4 products
Acrobat Dc
Acrobat Reader Dc
Acrobat
Acrobat Reader
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Acrobat Dc
From 15.007.20033 to 21.005.20060
Acrobat Reader Dc
From 15.007.20033 to 21.005.20060
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Acrobat Dc
From 15.007.20033 to 21.005.20058
Acrobat Reader Dc
From 15.007.20033 to 21.005.20058
Configuration C
4 vulnerable · 2 platform
Vulnerable SoftwareAffected Versions
Adobe
Acrobat
From 17.011.30180 to 17.011.30202
Acrobat
From 20.001.30005 to 20.004.30015
Adobe
Acrobat Reader
From 17.011.30180 to 17.011.30202
Acrobat Reader
From 20.001.30005 to 20.004.30015
Running on/withPlatform Versions
Apple
Macos
All versions
Microsoft
Windows
All versions

Related CWEs

CWE-416
Use After Free
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (2)

Source: psirt@adobe.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.