Patch tracker / CVE reference / CVE-2026-20950

CVE-2026-20950

High severity Microsoft vulnerability, CVSS 7.8. Fixed by 2 Microsoft security updates.

High

Risk summary

CVSS base
7.8
EPSS exploit probability
<1%
Severity
High

Exploitation and severity

Not in the CISA KEV catalog. EPSS exploit probability <1%. CVSS 7.8 (High).

This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.

What to do

Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing updates KB5002824, KB5002831 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Official patch for CVE-2026-20950

Apply the Microsoft security updates below to fix CVE-2026-20950. Each KB page links to the Microsoft Update Catalog download for every affected product.

KB5002824KB5002831

Affected products

  • Microsoft 365 Apps for Enterprise for 32-bit Systems
  • Microsoft Office 2019 for 32-bit editions
  • Microsoft Office 2019 for 64-bit editions
  • Office Online Server

Authoritative references

NVD detailMicrosoft MSRCFIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.

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Lexicon: the terms on this page
CVE
Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB
Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV
CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS
Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS
Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC
Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD
National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware
The vulnerability is linked to known ransomware activity.