CVE-2021-40731: Adobe Acrobat

High severity, CVSS 7.8. EPSS: 8.3% 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 an out-of-bounds write vulnerability when parsing a crafted JPEG2000 file, which could result in 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

• 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.