🛡️ CVE-2026-58598 — windows-10-21h2

🟠 CVSS 7.0 — High ✅ No Known Exploit CWE-362 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Backup Engine 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 high, 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-2026-58598 is classified as CWE-362: Race Condition. Concurrent operations share state without proper synchronisation, so timing decides whether the result is correct.

Affected software

CVE-2026-58598 is recorded against 5 packages.

  • 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)

Timeline and source

Published on 16 July 2026 and last revised on 22 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-362
Public Exploit ✅ No
Source NVD
Published 2026-07-16
Updated 2026-08-11
Modified 2026-07-22

Affected Packages

Software From version Fixed in
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

Similar Threats

Site Security Check

Is windows-10-21h2 part of your stack?

CVE-2026-58598 is rated CVSS 7.0 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.