CVE-2021-36493 Memory corruption in n/a

High 7.5 Published 3 Feb 2023 Updated 27 Mar 2025

Attackers can crash the application via a crafted command due to a buffer overflow in pdfimages.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-36493?

CVE-2021-36493 is a high-severity memory corruption vulnerability in Xpdfreader Xpdf, published on 3 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer Overflow vulnerability in pdfimages in xpdf 4.03 allows attackers to crash the application via crafted command.

Weakness: CWE-787

Which versions are affected by CVE-2021-36493?

It affects 1 product.

Products include Xpdfreader Xpdf.

How do I fix CVE-2021-36493?

No fix has been published for CVE-2021-36493 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-2021-36493 being exploited?

There is no known exploitation of CVE-2021-36493 in the wild and no public exploit code.

All Xpdfreader Xpdf vulnerabilities

Sources

Also known as GHSA-32jj-wp9g-2g8g, UBUNTU-CVE-2021-36493.