CVE-2025-55697CWE-122

CVE-2025-55697

High · published October 14, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
27.8
In the wild
Unconfirmed
What it is

⚡ A heap-based buffer overflow in Azure Local lets a local attacker level up their privileges — kind of like finding a hidden door in the back of a store that leads to VIP access! 🔑 Think of this vulnerability as a sneaky employee who finds a backroom key and gains access to the restricted areas of a store, where they can do all sorts of mischief. It’s a classic case of gaining higher access without proper authorization, all because of a flaw in how the system manages memory. This means an attacker already inside the system could elevate their privileges, potentially taking control of sensitive operations or data. The consequences could be absolutely devastating; they could manipulate settings, access confidential files, or even introduce malicious code. This isn't just a small hiccup — it's a potential gateway for chaos!

Put simply

Think of this vulnerability as a sneaky employee who finds a backroom key and gains access to the restricted areas of a store, where they can do all sorts of mischief. It’s a classic case of gaining higher access without proper authorization, all because of a flaw in how the system manages memory. This vulnerability arises from improper handling of memory allocation in Azure Local, allowing an authorized user to exploit heap memory corruption and gain elevated privileges.

What to do

This means an attacker already inside the system could elevate their privileges, potentially taking control of sensitive operations or data. The consequences could be absolutely devastating; they could manipulate settings, access confidential files, or even introduce malicious code. This isn't just a small hiccup — it's a potential gateway for chaos! To mitigate this risk, update to the latest version of Azure Local immediately. Ensure that security practices are in place to monitor for unauthorized access attempts, and regularly audit user privileges to prevent unauthorized escalations. Don't delay — this needs your attention! You've got this! Follow these steps, and you'll ensure your Azure environment is locked down and secure. 🛡️

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
CVSS v4.0
Not supplied
EPSS
0.00353 · 27.8th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2025-10-14T21:15Z
Affected products (2)
ProductVersionsFixed in
microsoft/windows_server_2022_23h2< 10.0.25398.191310.0.25398.1913
microsoft/windows_server_2025< 10.0.26100.689910.0.26100.6899
References (1)
EPSS history
Timeline
  • 14 OCT 17:01Z
    Azure Local Elevation of Privilege Vulnerability
    cvelistv5