CVE-2021-40729: Adobe Acrobat

Low severity, CVSS 3.3. EPSS: 4.3% chance of exploitation in the next 30 days.

Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by a 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 PDF file.

Affected products

• Adobe Acrobat: from 20.001.30005, up to and including 20.004.30015; from 17.011.30158, up to and including 17.011.30202
• Adobe Acrobat DC: from 15.008.20082, up to and including 21.007.20095; from 15.008.20082, up to and including 21.007.20096
• Adobe Acrobat Reader: from 20.001.30005, up to and including 20.004.30015; from 17.011.30158, up to and including 17.011.30202
• Adobe Acrobat Reader DC: from 15.008.20082, up to and including 21.007.20095; from 15.008.20082, up to and including 21.007.20096

Published 2021-10-15. Last modified 2026-06-17.