CVE-2026-55004 Microsoft CVE debrief

Who should care

System administrators and users of Microsoft Printer Drivers should be aware of this vulnerability and take necessary precautions to mitigate the risk. Affected organizations should prioritize patching or updating vulnerable systems, and conduct regular vulnerability assessments and penetration testing to identify potential security risks.

Technical summary

The vulnerability is caused by a double free error in Microsoft Printer Drivers. An authorized attacker can exploit this vulnerability to elevate privileges locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This issue affects Microsoft Printer Drivers and could allow an attacker with local access to exploit the vulnerability.

Defensive priority

High

Recommended defensive actions

• Apply patches or updates provided by Microsoft to fix the vulnerability
• Implement compensating controls to limit the attack surface
• Monitor system logs for suspicious activity
• Conduct regular vulnerability assessments and penetration testing
• Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-14T17:17:08.367Z and was last modified on 2026-07-22T16:18:17.590Z. The NVD entry is currently Undergoing Analysis. The vulnerability has not been confirmed to be exploited in the wild. Microsoft has not provided any additional information about the vulnerability. The CVE record was created by the CVE Numbering Authority (CNA) and is maintained by the National Vulnerability Database (NVD).

Official resources