HOMEVULNERABILITIESCVE-2020-28636
CRITICAL

CVE-2020-28636

CWE-129Published: March 4, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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->twin() An attacker can provide malicious input to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2020-28636 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

cgal1 product(s)
computational geometry algorithms library
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/05/msg00002.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/12/msg00011.html
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2020-1225
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/05/msg00002.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/12/msg00011.html
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2020-1225

All References (12)

→
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

Quick Facts

CVE IDCVE-2020-28636
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-129
CISA KEVNo
Affected3 vendor(s)
PublishedMar 4, 2021

Related CVEs (CWE-129)

CVE-2020-27485
9.9
CVE-2020-27483
9.9
CVE-2020-11227
9.8
CVE-2019-10594
9.8
CVE-2025-27034
9.8
CVE-2020-28601
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-28636 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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