CVE-2024-39420: Adobe Acrobat

High severity, CVSS 7.0. EPSS: 3.5% chance of exploitation in the next 30 days.

Acrobat Reader versions 20.005.30636, 24.002.21005, 24.001.30159, 20.005.30655, 24.002.20965, 24.002.20964, 24.001.30123, 24.003.20054 and earlier are affected by a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability that could lead to arbitrary code execution. This vulnerability arises when the timing of actions changes the state of a resource between the checking of a condition and the use of the resource, allowing an attacker to manipulate the resource in a harmful way. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Acrobat: from 20.001.30005, before 20.005.30655 (fixed in 20.005.30655); from 24.001.20604, before 24.001.30159 (fixed in 24.001.30159)
• Adobe Acrobat DC: from 15.008.20082, before 24.002.21005 (fixed in 24.002.21005)
• Adobe Acrobat Reader: from 20.001.3005, before 20.005.30655 (fixed in 20.005.30655)
• Adobe Acrobat Reader DC: from 15.008.20082, before 24.002.21005 (fixed in 24.002.21005)

Published 2024-08-14. Last modified 2026-06-17.