High severity8.8CISA KEVNVD Advisory· Published Feb 11, 2021· Updated Jun 17, 2026
CVE-2021-21017
CVE-2021-21017
Description
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow 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.
Affected products
6cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*+ 3 more
- cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*range: >=17.0,<=17.011.30188
- cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*range: <=20.013.20074
- cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*range: >=17.0,<=17.011.30188
- (no CPE)range: unspecified
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*+ 1 more
- cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*range: <=20.013.20074
- (no CPE)range: <=2020.013.20074, <=2020.001.30018, <=2017.011.30188
Patches
Vulnerability mechanics
References
2- helpx.adobe.com/security/products/acrobat/apsb21-09.htmlnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdThird Party AdvisoryUS Government Resource
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