Published May 22, 2026Sources checked Nov 11, 2026
6.1MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-25681 and is rated Medium severity with a CVSS score of 6.1. 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
Vendor revision: Nov 4, 2026
Vendor remediation details
CBL-Mariner Releases
Vendor-listed releases
1.7.7-4
1.12.15-8
1.4.0-6
1.62.0-5
1.32.0-6
2.8.1-4
2.7.5-17
0.0.10-6
1.30.10-25
1.7.1-5
1.9.5-14
0.12.0-6
3.7.0-6
0.5.1-5
0.14.0-15
2.62.0-17
2.14.1-14
4.0.2-9
1.31.0-23
8.7.11-7
2.2.4-3
2.27.0-13
2.2.4-4
CISA KEVNot listedBased on the latest collected catalog
EPSS0.2%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-25681?
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.