Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a stack overflow vulnerability due to insecure handling of a crafted PDF file, potentially resulting in memory corruption in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted PDF file in Acrobat Reader.
Published 2021-09-29 16:15:10
Updated 2022-02-05 02:17:29
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2021-39846

0.21%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-39846

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.8
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:P
8.6
4.9
NIST
6.1
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
1.8
4.2
NIST
6.1
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
1.8
4.2
Adobe Systems Incorporated

CWE ids for CVE-2021-39846

  • A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
    Assigned by: psirt@adobe.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-39846

Products affected by CVE-2021-39846

  • Adobe » Acrobat Reader » Classic Edition
    Versions from including (>=) 20.001.30005 and up to, including, (<=) 20.004.30006
    cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
    When used together with: Apple » Macos » Version: N/A
    When used together with: Microsoft » Windows » Version: N/A
  • Adobe » Acrobat Reader » Classic Edition
    Versions from including (>=) 17.011.30059 and up to, including, (<=) 17.011.30199
    cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
    When used together with: Apple » Macos » Version: N/A
    When used together with: Microsoft » Windows » Version: N/A
  • Adobe » Acrobat » Classic Edition
    Versions from including (>=) 20.001.30005 and up to, including, (<=) 20.004.30006
    cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
    When used together with: Apple » Macos » Version: N/A
    When used together with: Microsoft » Windows » Version: N/A
  • Adobe » Acrobat » Classic Edition
    Versions from including (>=) 17.011.30059 and up to, including, (<=) 17.011.30199
    cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
    When used together with: Apple » Macos » Version: N/A
    When used together with: Microsoft » Windows » Version: N/A
  • Adobe » Acrobat Dc » Continuous Edition
    Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20058
    cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
    When used together with: Apple » Macos » Version: N/A
  • Adobe » Acrobat Dc » Continuous Edition
    Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20060
    cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
    When used together with: Microsoft » Windows » Version: N/A
  • Adobe » Acrobat Reader Dc » Continuous Edition
    Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20058
    cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
    When used together with: Apple » Macos » Version: N/A
  • Adobe » Acrobat Reader Dc » Continuous Edition
    Versions from including (>=) 15.008.20082 and up to, including, (<=) 21.005.20060
    cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
    When used together with: Microsoft » Windows » Version: N/A
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