Is CVE-2020-26117 actively exploited?

CVE-2020-26117 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-26117?

CVE-2020-26117 has a CVSS score of 8.1 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

How do I patch CVE-2020-26117?

Patch guidance is available from tigervnc security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-26117.

Fix CVE-2020-26117 - HIGH tigervnc tigervnc

Q: Which products are affected by CVE-2020-26117?

3 products: tigervnc tigervnc, debian debian linux, opensuse leap.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: CWE-295

Metadata

Primary Vendor: TIGERVNC
Published: 9/27/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-26117

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary