CVE intelligence

CVE-2026-20846

Vulnerability intelligence

Published Feb 10, 2026Sources checked Oct 3, 2026

7.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-20846 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Release Notes Install KB5077179. Install KB5075904. Install KB5075906. Install KB5075943. Install KB5075912. Install KB5075899. Install KB5075942. Install KB5077181. Install KB5077212. Install KB5075941. Install KB5075897. Install KB5075999. Install KB5075971. Install KB5075970.

Vendor-listed releases

10.0.28000.1575
10.0.17763.8389
10.0.20348.4773
10.0.20348.4711
10.0.19044.6937
10.0.19045.6937
10.0.26100.32370
10.0.26100.32313
10.0.26200.7840
10.0.26200.7781
10.0.22631.6649
10.0.25398.2149
10.0.26100.7840
10.0.26100.7781
10.0.14393.8868
6.2.9200.25923
6.3.9600.23022
16.0.19822.20000

CISA KEVNot listedBased on the latest collected catalog

EPSS1.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-20846?

Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.