VULNERABILITY INTELLIGENCE
CVE-2020-26117
CVSS score8.1 HIGH
EPSS probability3.06%
CISA KEVNot currently listed
Published2020-09-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Description
In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.
Weakness classification
- nvd@nist.gov: CWE-295
Primary references
- cve@mitre.org — Broken Link, Mailing List, Third Party Advisory
- cve@mitre.org — Broken Link, Mailing List, Third Party Advisory
- cve@mitre.org — Issue Tracking, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Release Notes, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory