Main Vulnerability Database Vulnerabilities #VU50536

Out-of-bounds read in Adobe Reader and Adobe Acrobat - CVE-2021-21034

Published: February 9, 2021

Vulnerability identifier: #VU50536

CSH Severity: Medium

CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-21034

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Affected software

Adobe Reader
Adobe Acrobat

How to mitigate CVE-2021-21034

Install updates from vendor's website.

Adobe Reader - addressed in versions 17.011.30190, 20.001.30020, 21.001.20135
Adobe Acrobat - addressed in versions 17.011.30190, 20.001.30020, 21.001.20135

External References

https://helpx.adobe.com/security/products/acrobat/apsb21-09.html

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