Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a use-after-free vulnerability in the processing of Format event actions 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.
Published 2022-01-14 20:15:15
Updated 2022-01-21 18:17:54
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2021-45063

0.23%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-45063

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
NIST
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
1.8
3.6
NIST
3.3
LOW CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
1.8
1.4
Adobe Systems Incorporated

CWE ids for CVE-2021-45063

  • 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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:
    • nvd@nist.gov (Primary)
    • psirt@adobe.com (Secondary)

References for CVE-2021-45063

Products affected by CVE-2021-45063

  • Adobe » Acrobat Reader » Classic Edition
    Versions from including (>=) 17.011.30059 and up to, including, (<=) 17.011.30204
    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 (>=) 20.001.30005 and up to, including, (<=) 20.004.30017
    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 (>=) 17.011.30059 and up to, including, (<=) 17.011.30204
    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 (>=) 20.001.30005 and up to, including, (<=) 20.004.30017
    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, (<=) 21.007.20099
    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, (<=) 21.007.20099
    cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
    When used together with: Microsoft » Windows » Version: N/A
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