CVE-2020-35628

Name: CVE-2020-35628
Creator: NVD / NIST
Published: 2021-03-04T20:15:13.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.88%

Last modified Jun 17, 2026

CVE-2020-35628 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sloop() slh->incident_sface. EPSS estimates a 2.88% chance of exploitation in the next 30 days.

Description

A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sloop() slh->incident_sface. An attacker can provide malicious input to trigger this vulnerability.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.88%

85.0th 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
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://lists.debian.org/debian-lts-announce/2021/05/msg00002.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4J344OKKDLPRN422OYRR46HDEN6MM6P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NB5SF5OJR2DSV7CC6U7FVW5VJSJO5EKV/
https://security.gentoo.org/glsa/202305-34
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225Technical Description, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00002.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00011.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4J344OKKDLPRN422OYRR46HDEN6MM6P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NB5SF5OJR2DSV7CC6U7FVW5VJSJO5EKV/
https://security.gentoo.org/glsa/202305-34
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225Technical Description, Third Party Advisory

Timeline

Published: Mar 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35628?

How severe is CVE-2020-35628?

CVE-2020-35628 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.88% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35628?

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-2020-35628?

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

Scan your code now

Source: NVD / NIST