CVE-2020-21678 Memory corruption in n/a

What is CVE-2020-21678?

CVE-2020-21678 is a medium-severity memory corruption vulnerability in n/a, published on 10 Aug 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

A global buffer overflow in the genmp_writefontmacro_latex component in genmp.c of fig2dev 3.2.7b allows attackers to cause a denial of service (DOS) via converting a xfig file into mp format.

Weakness: CWE-120

Which versions are affected by CVE-2020-21678?

It affects 1 product.

Products include Fig2dev Project Fig2dev.

How do I fix CVE-2020-21678?

Upgrade to a fixed version.

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

Is CVE-2020-21678 being exploited?

There is no known exploitation of CVE-2020-21678 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2025-46397 Xfig: xfig: stack-overflow allows possible code execution via local input manipulation High 7.8
• CVE-2025-31162 fig2dev float point exception Medium 6.6
• CVE-2025-31163 fig2dev segmentation fault Medium 6.6
• CVE-2025-31164 fig2dev heap-buffer overflow Medium 6.6
• CVE-2025-46398 Xfig: fig2dev stack-overflow via read_objects Medium 5.5

Sources

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

Also known as DEBIAN-CVE-2020-21678, GHSA-52q9-xmqx-qqh8.