Local privilege escalation via double-free memory release
Published Jul 14, 2026 · Updated Jul 14, 2026
Double free in Microsoft Printer Drivers allows local users with existing access to elevate privileges on affected Windows systems. The affected printer-driver code releases the same memory allocation twice, but Microsoft has not identified the driver, function, or attacker-controlled input. Exploitation requires local low-privilege access and can grant elevated execution; no remote path or user interaction is reported.
Summary
What happened
Double free in Microsoft Printer Drivers allows local users with existing access to elevate privileges on affected Windows systems. The affected printer-driver code releases the same memory allocation twice, but Microsoft has not identified the driver, function, or attacker-controlled input. Exploitation requires local low-privilege access and can grant elevated execution; no remote path or user interaction is reported.
The record
- CVE
- CVE-2026-55004
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-415, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.9020
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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