CVE intelligence

CVE-2025-22870

Vulnerability intelligence

Published Mar 12, 2025Sources checked Sep 30, 2026

4.4MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2025-22870 and is rated Medium severity with a CVSS score of 4.4. 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

CBL-Mariner Releases

Vendor-listed releases

2.6.1-22
1.22.7-4
1.9.5-11
10.25.1-4
1.31.0-6
19.0.4-6
1.18.8-8
3.5.1-5
1.29.4-14
17.0.7-7
2.45.4-12
1.9.5-8
2.14.1-6
3.6.1-2
1.7.0-3
2.7.5-3
0.8.2-2
2.4.0-29

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2025-22870?

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to "*.example.com", a request to "[::1%25.example.com]:80` will incorrectly match and not be proxied.