CVE-2021-40723: Adobe Acrobat

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an out-of-bounds read vulnerability 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.

Affected products

• Adobe Acrobat: before 20.001.30020 (fixed in 20.001.30020); from 20.0, before 20.001.30020 (fixed in 20.001.30020)
• Adobe Acrobat DC: before 21.001.20135 (fixed in 21.001.20135)
• Adobe Acrobat Reader: before 17.011.30190 (fixed in 17.011.30190); from 20.0, before 20.001.30020 (fixed in 20.001.30020)
• Adobe Acrobat Reader DC: before 21.001.20135 (fixed in 21.001.20135)

Published 2023-09-07. Last modified 2026-06-17.