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🛡️ CVE-2024-43394 — apache

🟠 CVSS 8.0 — High ✅ No Known Exploit NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Apache HTTP Server: SSRF on Windows due to UNC paths

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: None.
  • Availability impact: None.

Affected software

CVE-2024-43394 is recorded against 2 packages.

  • apache
  • http-server (from 2.4.0 up to 2.4.64)

Timeline and source

Published on 16 July 2025 and last revised on 6 November 2025. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

httpd.apache.org (Web)
nvd.nist.gov (Web)
www.openwall.com (Web)
www.openwall.com (Web)
lists.debian.org (Web)

Other advisories for this package

apache has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2024-43394 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-07-16
Updated 2026-08-20
Modified 2025-11-06
Fix URL N/A

Affected Packages

Software From version Fixed in
apache — —
http-server 2.4.0 2.4.64

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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