CVE-2025-62455CWE-20

CVE-2025-62455

High · published December 9, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
39.9
In the wild
Unconfirmed
What it is

⚡ An authorized attacker can elevate their privileges locally in Windows Message Queuing with improper input validation — like a guest sneaking into the VIP section of a party! 🎉 This vulnerability is akin to someone using a fake ticket to gain access to a restricted area at an event. The system trusts the ticket without checking its authenticity, allowing unauthorized actions within the network. If exploited, an attacker could gain elevated privileges, enabling them to execute malicious commands, access sensitive data, and potentially compromise the entire system. This could lead to a complete takeover of critical resources, causing significant damage and disruptions.

Put simply

This vulnerability is akin to someone using a fake ticket to gain access to a restricted area at an event. The system trusts the ticket without checking its authenticity, allowing unauthorized actions within the network. The vulnerability arises from improper input validation in Windows Message Queuing, allowing authorized users to manipulate message content and execute unauthorized actions.

What to do

If exploited, an attacker could gain elevated privileges, enabling them to execute malicious commands, access sensitive data, and potentially compromise the entire system. This could lead to a complete takeover of critical resources, causing significant damage and disruptions. To remediate this vulnerability, ensure all systems are updated to the latest patches provided by Microsoft. Regularly audit user permissions and implement strict input validation checks to prevent unauthorized access. Consider disabling unnecessary services if not in use. You've got this! With these steps, you'll boost your security and keep those unauthorized party crashers at bay! 🛡️

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
0.00473 · 39.9th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2025-12-09T23:15Z
Affected products (13)
ProductVersionsFixed in
microsoft/windows_10_1607< 10.0.14393.868810.0.14393.8688
microsoft/windows_10_1607< 10.0.14393.868810.0.14393.8688
microsoft/windows_10_1809< 10.0.17763.814610.0.17763.8146
microsoft/windows_10_1809< 10.0.17763.814610.0.17763.8146
microsoft/windows_10_21h2< 10.0.19044.669110.0.19044.6691
microsoft/windows_10_22h2< 10.0.19045.669110.0.19045.6691
microsoft/windows_server_2008all versions—
microsoft/windows_server_2008all versions—
microsoft/windows_server_2008all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2012all versions—
microsoft/windows_server_2016< 10.0.14393.868810.0.14393.8688
microsoft/windows_server_2019< 10.0.17763.814610.0.17763.8146
References (1)
EPSS history
Timeline
  • 09 DEC 17:55Z
    Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability
    cvelistv5