CVE-2021-21017

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.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

86.33% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2021-11-03

Published

2021-02-11

Updated

2025-10-21

Proof-of-concept exploits (2)

• ZeusBox/CVE-2021-2101744★ · 2021-02-27
• tzwlhack/CVE-2021-210170★ · 2022-03-29

References

• CVE Record
• NVD entry

Related

• CVE-2021-37980
• CVE-2017-11882
• CVE-2018-20250
• CVE-2021-4034
• CVE-2022-21999
• CVE-2022-22718