🛡️ CVE-2026-55004 — windows-10-1607

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-415 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Double free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-55004 is classified as CWE-415: Double Free. The same allocation is released twice, corrupting allocator bookkeeping.

Affected software

CVE-2026-55004 is recorded against 12 packages.

  • windows-10-1607 (fixed in 10.0.14393.9339)
  • windows-10-1809 (fixed in 10.0.17763.9020)
  • windows-10-21h2 (fixed in 10.0.19044.7548)
  • windows-10-22h2 (fixed in 10.0.19045.7548)
  • windows-11-24h2 (fixed in 10.0.26100.8875)
  • windows-11-25h2 (fixed in 10.0.26200.8875)
  • windows-11-26h1 (fixed in 10.0.28000.2525)
  • windows-server-2012
  • windows-server-2016 (fixed in 10.0.14393.9339)
  • windows-server-2019 (fixed in 10.0.17763.9020)
  • windows-server-2022 (fixed in 10.0.20348.5386)
  • windows-server-2025 (fixed in 10.0.26100.33158)

Timeline and source

Published on 14 July 2026 and last revised on 24 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-415
Public Exploit ✅ No
Source NVD
Published 2026-07-14
Updated 2026-08-11
Modified 2026-07-24
Fix URL N/A

Affected Packages

Software From version Fixed in
windows-10-1607 10.0.14393.9339
windows-10-1809 10.0.17763.9020
windows-10-21h2 10.0.19044.7548
windows-10-22h2 10.0.19045.7548
windows-11-24h2 10.0.26100.8875
windows-11-25h2 10.0.26200.8875
windows-11-26h1 10.0.28000.2525
windows-server-2012
windows-server-2016 10.0.14393.9339
windows-server-2019 10.0.17763.9020
windows-server-2022 10.0.20348.5386
windows-server-2025 10.0.26100.33158

Similar Threats

Site Security Check

Is windows-10-1607 part of your stack?

CVE-2026-55004 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.