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CVE-2020-26117

nvd nist
Published: Sep 27, 2020Modified: Jun 17, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Exploitability: 2.8 / Impact: 5.2
Source: NVD

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.

Affected (3)

Tigervnc
1 product
Tigervnc
Debian
1 product
Debian Linux
Opensuse
1 product
Leap
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Tigervnc
Before 1.11.0
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0
Leap
Version 15.2

Related CWEs

CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.

References (18)

Source: cve@mitre.org
Broken LinkMailing ListThird Party Advisory
Source: cve@mitre.org
Broken LinkMailing ListThird Party Advisory
Source: cve@mitre.org
Issue TrackingThird Party Advisory
Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
Release NotesThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken LinkMailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken LinkMailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory

Timeline

No history available yet.