CVE-2025-59277CWE-1287

Windows Authentication Elevation of Privilege Vulnerability

High · published October 14, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
30.5
In the wild
Unconfirmed
What it is

⚡ An authorized attacker could simply waltz in and elevate their privileges on your Windows system! This flaw is like leaving the keys to your office right on the reception desk! 🔑 This vulnerability is comparable to a hotel where an employee can easily access any room without proper checks — imagine someone sneaking into your suite just because they forgot to check an ID! With this vulnerability, an attacker could gain access to sensitive information, install malicious software, or even control the entire system. The potential for damage is absolutely devastating, especially if they exploit this privilege escalation without being detected.

Put simply

This vulnerability is comparable to a hotel where an employee can easily access any room without proper checks — imagine someone sneaking into your suite just because they forgot to check an ID! CVE-2025-59277 revolves around improper validation of input types in Windows Authentication Methods, enabling authorized users to escalate their privileges locally and gain unauthorized access to system resources.

What to do

With this vulnerability, an attacker could gain access to sensitive information, install malicious software, or even control the entire system. The potential for damage is absolutely devastating, especially if they exploit this privilege escalation without being detected. To mitigate this issue, ensure all systems are patched to the latest Windows security updates. Additionally, review user permissions regularly to limit the impact of any potential exploitation. Don't forget to implement strict input validation measures! You've got this! Stay vigilant and patch up to secure your systems! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00377 · 30.5th percentile
Weakness
CWE-1287 · Improper Validation of Specified Type of Input
Published
2025-10-14T17:00Z
EPSS history
Timeline
  • 14 OCT 17:00Z
    Windows Authentication Elevation of Privilege Vulnerability
    cvelistv5