Heap-Based Buffer Overflow in Windows Message Queuing by Microsoft
CVE-2026-54992

8.4HIGH

Key Information:

Badges

๐Ÿ‘พ Exploit Exists๐ŸŸก Public PoC

What is CVE-2026-54992?

A heap-based buffer overflow vulnerability in Windows Message Queuing Queue Manager can allow an unauthorized attacker to execute arbitrary code locally. This flaw can potentially compromise the integrity and availability of the affected system, posing significant risks if not addressed. Timely updates and patches from Microsoft are essential to mitigate this security threat. Users are urged to remain vigilant and ensure their systems are up to date to protect against exploitation.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9339

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9020

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7548

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

References

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • ๐ŸŸก

    Public PoC available

  • ๐Ÿ‘พ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.