Integer underflow in Adobe Reader and Adobe Acrobat - CVE-2023-26421
Published: April 11, 2023 / Updated: April 13, 2023
Vulnerability identifier: #VU74926
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-26421
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer underflow. A remote attacker can trick the victim to open a specially crafted PDF file, trigger an integer underflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2023-26421
Install updates from vendor's website.
Adobe Reader - addressed in versions 20.005.30467, 23.001.20143
Adobe Acrobat - addressed in versions 20.005.30467, 23.001.20143
Adobe Acrobat - addressed in versions 20.005.30467, 23.001.20143