Skip to main content

Early Access — Mondoo Vulnerability Intelligence is currently in preview.

Mondoo Vulnerability Intelligence

Curated by Mondoo Research, enhanced with AI

Resources

Search Vulnerabilities
Trending CVEs
Browse Ecosystems
Terminology
Blog

Open Source

cnquery
cnspec

Star us on GitHub!

Company

Mondoo Platform
About
Contact

© 2026 Mondoo, Inc.

Privacy Policy Terms of Service Imprint

Vulnerability Intelligence

CVE-2026-20955

HIGH7.8

Microsoft Excel Remote Code Execution Vulnerability

Published Jan 13, 2026

Modified Yesterday

No fix available

References

ADVISORYhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20955 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2026-20955

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7.8/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedJan 13, 2026

ModifiedJan 13, 2026

CVE-2026-20955 | Mondoo Vulnerability Intelligence