CVE-2025-24054KEV · OVERDUECWE-73

NTLM Hash Disclosure Spoofing Vulnerability

Medium · published March 11, 2025

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 6.5. It is confirmed in active exploitation. It sits in the 99.2th percentile for exploit probability.

534
days past CISA
deadline
CVSS v3.1
6.5
EPSS
62%
Percentile
99.2
In the wild
Confirmed
What it is

⚠️ A sneaky trick lets attackers control file names over NTLM! Imagine someone hijacking your packages just because they have the wrong address — it's a recipe for chaos! Think of NTLM like a postal service that delivers parcels. If an attacker can change the delivery address, they can reroute sensitive packages to themselves, effectively intercepting your data without you ever knowing. 📦✉️ If an unauthorized attacker successfully exploits this vulnerability, they could impersonate legitimate files, leading to potential data breaches or network compromise. This could mean lost data, unauthorized access, or even a complete system takeover, which is absolutely devastating!

Put simply

Think of NTLM like a postal service that delivers parcels. If an attacker can change the delivery address, they can reroute sensitive packages to themselves, effectively intercepting your data without you ever knowing. 📦✉️ This vulnerability allows attackers to manipulate file names or paths in Windows NTLM authentication, enabling them to perform spoofing attacks over the network without proper authorization.

What to do

If an unauthorized attacker successfully exploits this vulnerability, they could impersonate legitimate files, leading to potential data breaches or network compromise. This could mean lost data, unauthorized access, or even a complete system takeover, which is absolutely devastating! To secure your system, ensure that you're using the latest security patches for Windows that address this issue. Additionally, monitor your network traffic for any suspicious file access patterns and consider enhancing your file validation processes. You've got this! By following these steps, you’ll shore up your defenses and safeguard your network. 🛡️

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.62270 · 99.2th percentile
Weakness
CWE-73 · External Control of File Name or Path
Published
2025-03-11T16:59Z
KEV added
2025-04-17 · due 2025-05-08
EPSS history
Timeline
  • 17 APR 00:00Z
    Added to CISA KEV — remediate by May 8
    kev
  • 11 MAR 16:59Z
    NTLM Hash Disclosure Spoofing Vulnerability
    cvelistv5