CVE-2020-28628

Multiple code execution vulnerabilities exists in the Nef polygon-parsing functionality of CGAL...

10.0 CriticalFix available

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_volume() seh->twin().

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.40%Up 0.2 points since Apr 19, 2022

What each source reports

CVE List Score used 10.0

Record: CVE-2020-28628
CVSS 3.0: 10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness: CWE-129
Updated: 2026-11-02

EUVDEUVD-2020-21026 10.0

Record: EUVD-2020-21026
CVSS 3.0: 10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-73cp-c5vj-9j5j 8.8

Multiple code execution vulnerabilities exists in the Nef polygon-parsing functionality of CGAL...

Record: GHSA-73cp-c5vj-9j5j
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-125, CWE-129
Updated: 2026-11-02

NVD 8.8

Record: CVE-2020-28628
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0: 10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-129, CWE-125
Updated: 2026-11-02

OSV 8.8

Record: CVE-2020-28628
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-28628 8.8

Record: DEBIAN-CVE-2020-28628
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-28628 8.8

Record: UBUNTU-CVE-2020-28628
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0: 10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`cgal` Debian:12	before 5.2-3	5.2-3
`cgal` Debian:13	before 5.2-3	5.2-3
`cgal` Debian:14	before 5.2-3	5.2-3
`cgal` Debian:9 From an advisory covering 45 CVEs	before 4.9-1+deb9u1, plus listed versions 4.9-1	4.9-1+deb9u1
`cgal` Debian:10 From an advisory covering 45 CVEs	before 4.13-1+deb10u1, plus listed versions 4.13-1	4.13-1+deb10u1
`cgal` Ubuntu:14.04:LTS	All versions, plus listed versions 4.2-4ubuntu14.2-4ubuntu24.2-5ubuntu1	None known
`cgal` Ubuntu:16.04:LTS	All versions, plus listed versions 4.6.1-2ubuntu64.7-34.7-4	None known
`cgal` Ubuntu:18.04:LTS	All versions, plus listed versions 4.9-1build24.11-24.11-2build1	None known
`cgal` Ubuntu:20.04:LTS	All versions, plus listed versions 4.14-55.0.2-1ubuntu15.0.2-3	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-28628 is a critical vulnerability (CVSS 10.0) in Cgal Project Libcgal, published May 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.40%, the 84th percentile. Fixed in cgal 5.2-3.