CVE-2026-54992
Actively exploited. CVE-2026-54992 is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-54992 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
Microsoft has fixed a very large number of vulnerabilities in Windows. An attacker can exploit the vulnerabilities to carry out attacks that can lead to categories of damage, as mentioned in the table below. The most severe vulnerabilities have been assigned characteristics CVE-2026-49172, CVE-2026-56190, CVE-2026-54990, CVE-2026-49798, CVE-2026-50380, CVE-2026-50447, CVE-2026-50518, CVE-2026-56159, CVE-2026-56188, and CVE-2026-57092 and are located in the FTP service, Remote Desktop (client and server), the Kernel, GDI+, Message Queuing Service, DHCP Server, Server Network Driver, and VMSwitch, respectively. Attackers with access to these services may be able to execute code or gain access to the vulnerable system without prior authentication. In addition to these severe vulnerabilities, more than 400 vulnerabilities have been fixed, all varying in severity from medium to high/critical. Due to the nature and scope of these updates, the NCSC advises to prioritize the deployment of these updates.
CSIRTS triage
- What
- Microsoft has fixed a large number of vulnerabilities in Windows that can be exploited by attackers.
- Who is affected
- Users of Microsoft Windows operating systems.
- Urgency
- Remediation is urgent due to active exploitation of these vulnerabilities.
- Action
- Users should apply the latest patches provided by Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 38% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-54992 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (3)
- unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl · 2026-07-14
- highCVE-2026-54992: Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized att…nvd · 2026-07-14
- highCVE-2026-54992: Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerabilitymsrc · 2026-07-14
External references
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