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 ser…

published 2021-08-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14446

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

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.

Patch / fix

distros 1 links 1

fig2dev Debian 14, Debian 13, Debian 12 1:3.2.8-1

debian advisories DEBIAN-CVE-2020-21678

sourceforge.net/p/mcj/tickets/71/ advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-21678 updated 2026-11-07 cvss 5.5

transfig: A global buffer overflow in the genmp_writefontmacro_latex component in genmp.c could result in a denial of service

Red Hat Enterprise Linux 6 transfig Red Hat Enterprise Linux 7 transfig
affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

sourceforge.net https://sourceforge.net/p/mcj/tickets/71/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

sourceforge.net /p/mcj/tickets/71/
exploit, issue-tracking, patch, third-party-advisory

Sources

CVE List CVE-2020-21678
NVD CVE-2020-21678

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary