CVE-2026-20815CWE-362

CVE-2026-20815

High · published January 13, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
20.8
In the wild
Unconfirmed
What it is

⚡ A sneaky race condition in Capability Access Management Service (camsvc) is your ticket to local privilege escalation — and it’s all thanks to improper synchronization! Think of it like two chefs trying to use the same blender without taking turns. If one chef isn’t paying attention and just hits the button at the wrong time, they can blend their secret sauce, potentially ruining the other chef’s dish! In this scenario, an authorized attacker can exploit this flaw to elevate their privileges, gaining access to restricted areas of the system. This could mean unauthorized access to sensitive data or even control over critical system functions, potentially leading to a full takeover. It's a serious scenario that could have devastating effects on your system integrity!

Put simply

Think of it like two chefs trying to use the same blender without taking turns. If one chef isn’t paying attention and just hits the button at the wrong time, they can blend their secret sauce, potentially ruining the other chef’s dish! This vulnerability stems from concurrent execution in camsvc where improper synchronization allows an attacker to exploit timing issues, leading to a local privilege escalation.

What to do

In this scenario, an authorized attacker can exploit this flaw to elevate their privileges, gaining access to restricted areas of the system. This could mean unauthorized access to sensitive data or even control over critical system functions, potentially leading to a full takeover. It's a serious scenario that could have devastating effects on your system integrity! To protect against this, ensure you apply the latest security updates provided by the vendor. Additionally, review your configuration settings to enforce proper synchronization practices. Regular audits of user permissions can also prevent unauthorized privilege elevation. You've got this! Stay vigilant, patch up, and keep your systems safe! 🛡️

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00293 · 20.8th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2026-01-13T23:16Z
Affected products (3)
ProductVersionsFixed in
microsoft/windows_11_24h2< 10.0.26100.762310.0.26100.7623
microsoft/windows_11_25h2< 10.0.26200.762310.0.26200.7623
microsoft/windows_server_2025< 10.0.26100.3223010.0.26100.32230
References (1)
EPSS history
Timeline
  • 13 JAN 17:56Z
    Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability
    cvelistv5