CVE-2020-35636
CVSS v3
9.8
CRITICAL
EPSS Score
3.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1 in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh->volume() OOB read. 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 this vulnerability.
Technical details
- Published
- 2021-03-04
Frequently asked questions
What is CVE-2020-35636?
A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1 in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh->volume() OOB read. 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 this vulnerability.
Is CVE-2020-35636 actively exploited?
Active exploitation of CVE-2020-35636 has not been confirmed. Its EPSS score was 3.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-35636?
CVE-2020-35636 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-35636 affecting your environment?
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