CVE-2020-28635

Name: CVE-2020-28635
Creator: NVD / NIST
Published: 2022-04-18T17:15:13.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.12%

Last modified Jun 17, 2026

CVE-2020-28635 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Multiple code execution vulnerabilities exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. EPSS estimates a 2.12% chance of exploitation in the next 30 days.

Description

Multiple code execution vulnerabilities exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. An attacker can provide malicious input to trigger any of these vulnerabilities. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser<EW>::read_sedge() seh->facet().

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.12%

79.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cgal	Computational Geometry Algorithms Library	5.1.1
Debian	Debian Linux	10.0

References

https://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202305-34Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202305-34Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225Exploit, Third Party Advisory

Timeline

Published: Apr 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28635?

How severe is CVE-2020-28635?

CVE-2020-28635 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28635?

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-2020-28635?

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

Scan your code now

Source: NVD / NIST