🛡️ CVE-2026-42900 — windows-10-1607
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is high, an attacker needs no 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-2026-42900 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-2026-42900 is recorded against 11 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 10.0.28000.2269)
- 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 23 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
Details
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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 | — | 10.0.28000.2269 |
| 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 |
References
Similar Threats
- High CVE-2022-35743
- Critical CVE-2022-35744
- High CVE-2022-35745
- High CVE-2022-35746
- Medium CVE-2022-35747
More CVE 2026 advisories
Browse all of CVE 2026 in the advisory index.
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