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

Quick assessment

Affected
Apache Software Foundation Apache HTTP Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server存在安全漏洞，该漏洞源于Windows平台上AllowEncodedSlashes On和MergeSlashes Off配置下的SSRF漏洞，可能导致NTLM哈希泄露。

AI Predicted 7.4 Difficulty: Easy EPSS 0.82% · P56
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I. Basic Information for CVE-2025-59775

Vulnerability Information
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Vulnerability Title
Apache HTTP Server: NTLM Leakage on Windows through UNC SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
Server-Side Request Forgery (SSRF) vulnerability  in Apache HTTP Server on Windows with AllowEncodedSlashes On and MergeSlashes Off  allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.66, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache HTTP Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server存在安全漏洞，该漏洞源于Windows平台上AllowEncodedSlashes On和MergeSlashes Off配置下的SSRF漏洞，可能导致NTLM哈希泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache HTTP Server 2.4.0 ~ 2.4.65 -

II. Public POCs for CVE-2025-59775

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III. Intelligence Information for CVE-2025-59775

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Vendor Advisories for CVE-2025-59775 (1)

Same Patch Batch · Apache Software Foundation · 2025-12-05 · 5 CVEs total

CVE-2025-58098 Apache HTTP Server: Server Side Includes adds query string to #exec cmd=...
CVE-2025-66200 Apache HTTP Server: mod_userdir+suexec bypass via AllowOverride FileInfo
CVE-2025-65082 Apache HTTP Server: CGI environment variable override
CVE-2025-55753 Apache HTTP Server: mod_md (ACME), unintended retry intervals

IV. Related Vulnerabilities

Same product: Apache HTTP Server
Same vendor: Apache Software Foundation
Same weakness: CWE-918

V. Comments for CVE-2025-59775

Anonymous User
2026-06-18 07:16:46

1

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