# CVE-2024-43394: apache2: Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malic...

CVE-2024-43394 is fixed in apache2 on 1 platform by DEBIAN-CVE-2024-43394 (version 2.4.65-1~deb11u1), released July 10, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-43394
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0127
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 10, 2025

## Description

Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via  mod_rewrite or apache expressions that pass unvalidated request input.  This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63.  Note:  The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths.   The server offers limited protection against administrators directing the server to open UNC paths. Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | apache2 Debian 11.6 (bullseye) | 2.4.65-1~deb11u1 | [DEBIAN-CVE-2024-43394](https://patchblox.com/security/data/fix/linux/debian-cve-2024-43394.md) | Jul 10, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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