CVE-2020-26117
HIGH8.1EPSS 0.69%tigervnc - security update
Published: 9/27/2020Modified: 4/28/2026
Also known as:DEBIAN-CVE-2020-26117
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 packages (2)
- Debian/tigervncfrom 0, < 1.10.1+dfsg-9
- Debian/tigervncfrom 0, < 1.7.0+dfsg-7+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |