CVE-2023-21606 Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

What is CVE-2023-21606?

CVE-2023-21606 is a high-severity memory corruption vulnerability in Adobe Acrobat, published on 18 Jan 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by an out-of-bounds write vulnerability that 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.

Weakness: CWE-787

Which versions are affected by CVE-2023-21606?

It affects 4 products.

Products include Adobe Acrobat, Adobe Acrobat Dc, Adobe Acrobat Reader, Adobe Acrobat Reader Dc.

How do I fix CVE-2023-21606?

No fix has been published for CVE-2023-21606 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-21606 being exploited?

There is no known exploitation of CVE-2023-21606 in the wild and no public exploit code.

Other vulnerabilities in Adobe Acrobat

• CVE-2021-28550 Adobe Acrobat and Reader Use-After-Free Exploited Critical 9.6
• CVE-2021-21017 Adobe Acrobat and Reader Heap-based Buffer Overflow Exploited High 8.8
• CVE-2014-0546 Adobe Reader and Acrobat Sandbox Bypass Exploited High 8.8
• CVE-2014-0496 Adobe Reader and Acrobat Use-After-Free Exploited High 8.8
• CVE-2013-3346 Adobe Reader and Acrobat Memory Corruption Exploited High 8.8

All Adobe Acrobat vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mfw5-grwr-r7v2.