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CVE-2020-35636

30
FAUCET Score

CVE-2020-35636 is a critical code execution vulnerability in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1, specifically within the SNC_io_parser::read_sface() function. It allows an unauthenticated attacker to achieve out-of-bounds read and type confusion, potentially leading to arbitrary code execution, by providing a specially crafted malformed file. With a CVSS score of 9.8, this vulnerability is highly severe, requiring no user interaction or complex attack conditions. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.1.1CPE matchmatch criteria
cpe:2.3:a:cgal:computational_geometry_algorithms_library:5.1.1:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

10.0CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 79th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.debian.org / debian-lts-announce/2022/12/msg00011.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/202305-34
talosintelligence.com / vulnerability_reports/TALOS-2020-1225
ExploitThird Party Advisory