CVE-2020-18032

Name: CVE-2020-18032
Creator: NVD / NIST
Published: 2021-04-29T18:15:08.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.62%

Last modified Jun 17, 2026

CVE-2020-18032 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted file into the "lib/common/shapes.c" component.. EPSS estimates a 2.62% chance of exploitation in the next 30 days.

Description

Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted file into the "lib/common/shapes.c" component.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

2.62%

83.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Graphviz	Graphviz	< 2.46.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34

References

https://gitlab.com/graphviz/graphviz/-/issues/1700Exploit, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00014.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5PQPHJHPU46FK3R5XBP3XDT4X37HMPC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGY2IGARE6RZHTF2UEZEWLMQCDILFK6A/
https://security.gentoo.org/glsa/202107-04Issue Tracking, Third Party Advisory
https://www.debian.org/security/2021/dsa-4914Third Party Advisory
https://gitlab.com/graphviz/graphviz/-/issues/1700Exploit, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00014.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5PQPHJHPU46FK3R5XBP3XDT4X37HMPC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGY2IGARE6RZHTF2UEZEWLMQCDILFK6A/
https://security.gentoo.org/glsa/202107-04Issue Tracking, Third Party Advisory
https://www.debian.org/security/2021/dsa-4914Third Party Advisory

Timeline

Published: Apr 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18032?

How severe is CVE-2020-18032?

CVE-2020-18032 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.62% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18032?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18032?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST