Is CVE-2025-9611 in the CISA KEV catalog?

No. CVE-2025-9611 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-9611?

CVE-2025-9611 has an EPSS score of 0.84% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-9611?

No published fix for CVE-2025-9611 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-9611

UNSCORED

NVD

Description

Microsoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections. This allows an attacker to perform a DNS rebinding attack via a victim’s web browser and send unauthorized requests to a locally running MCP server, resulting in unintended invocation of MCP tool endpoints.

CWE-749

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.84%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Other references3

Embed a live status badge for CVE-2025-9611

Markdown

[![CVE-2025-9611](https://tridentstack.com/cve/badge/CVE-2025-9611.svg)](https://tridentstack.com/cve/CVE-2025-9611)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-9611"><img src="https://tridentstack.com/cve/badge/CVE-2025-9611.svg" alt="CVE-2025-9611"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-08.