CVE-2021-35983 : Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) a

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an 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.

Published 2021-08-20 19:15:10

Updated 2021-09-01 01:20:34

Source Adobe Systems Incorporated

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2021-35983

EPSS FAQ

6.07%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 94 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-35983

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	1.8	5.9	Adobe Systems Incorporated
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-35983

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Assigned by: psirt@adobe.com (Primary)

Products affected by CVE-2021-35983

Adobe » Acrobat Dc » Classic Edition
Versions from including (>=) 20.001.30005 and up to, including, (<=) 20.004.30005
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
Matching versions
Adobe » Acrobat Dc » Continuous Edition
Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20054
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
Matching versions
Adobe » Acrobat Dc » Classic Edition
Versions from including (>=) 17.011.30059 and up to, including, (<=) 17.011.30197
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
Matching versions
Adobe » Acrobat Reader Dc » Continuous Edition
Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20054
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
Matching versions
Adobe » Acrobat Reader Dc » Classic Edition
Versions from including (>=) 20.001.30005 and up to, including, (<=) 20.004.30005
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*
Matching versions
Adobe » Acrobat Reader Dc » Classic Edition
Versions from including (>=) 17.011.30059 and up to, including, (<=) 17.011.30197
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*
Matching versions

Vulnerability Details : CVE-2021-35983

Exploit prediction scoring system (EPSS) score for CVE-2021-35983

CVSS scores for CVE-2021-35983

CWE ids for CVE-2021-35983

References for CVE-2021-35983

Products affected by CVE-2021-35983