CVE-2021-21057 Acrobat Reader DC Invalid Memory Read Due To An Uninitialized Pointer

What is CVE-2021-21057?

CVE-2021-21057 is a medium-severity vulnerability in Adobe Acrobat, published on 11 Feb 2021. 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

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a null pointer dereference vulnerability when parsing a specially crafted PDF file. An unauthenticated attacker could leverage this vulnerability to achieve denial of service 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-476

Which versions are affected by CVE-2021-21057?

It affects 4 products.

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

How do I fix CVE-2021-21057?

No fix has been published for CVE-2021-21057 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-21057 being exploited?

There is no known exploitation of CVE-2021-21057 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-jpr2-8h3g-8rc7.