CVE-2020-26117

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.06% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.4% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-09-27 03:30Z5 YR AGO

Last updated

2024-08-04 15:49Z2 YR AGO

Reserved

2020-09-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-295Improper Certificate ValidationBase
• CWE-296Improper Following of a Certificate's Chain of TrustBase

Data version

5.1

Document digest

6503a6fe0730810cb33802f8d913c2f2571c72b91b75ddff95a1c574fbc6a138

• github.comhttps://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0x_refsource_MISC
• github.comhttps://github.com/TigerVNC/tigervnc/commit/f029745f63ac7d22fb91639b2cb5b3ab56134d6ex_refsource_MISC
• github.comhttps://github.com/TigerVNC/tigervnc/commit/b30f10c681ec87720cff85d490f67098568a9cbax_refsource_MISC
• github.comhttps://github.com/TigerVNC/tigervnc/commit/20dea801e747318525a5859fe4f37c52b05310cbx_refsource_MISC
• github.comhttps://github.com/TigerVNC/tigervnc/commit/7399eab79a4365434d26494fa1628ce1eb91562bx_refsource_MISC
• bugzilla.opensuse.orghttps://bugzilla.opensuse.org/show_bug.cgi?id=1176733x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20201006 [SECURITY] [DLA 2396-1] tigervnc security updatehttps://lists.debian.org/debian-lts-announce/2020/10/msg00007.htmlmailing-listx_refsource_MLIST
• lists.opensuse.orgopenSUSE-SU-2020:1666http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00025.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2020:1841http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00024.htmlvendor-advisoryx_refsource_SUSE