CVE-2025-59775: Apache HTTP Server: NTLM Leakage on Windows through UNC SSRF

CSIRTS triage

What

Apache HTTP Server on Windows leaks NTLM credentials through UNC path handling in SSRF vulnerability.

Who is affected

Windows deployments of Apache HTTP Server are affected.

Urgency

High severity (CVSS 7.5) because credential leakage threatens authentication on Windows networks.

Action

Update Apache HTTP Server to a version that properly handles and blocks UNC SSRF paths.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

high — CVSS 7.5

Published

2026-08-06

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59775

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2025-597750.80% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• high[UPDATE] [high] Apache HTTP Server: Multiple Vulnerabilitiescert-bund
• high[UPDATE] [high] Apple macOS: Multiple vulnerabilitiescert-bund
• high[NEW] [high] Dell PowerProtect Data Domain: Multiple vulnerabilitiescert-bund

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