Vulnerability · CVE-2025-55231
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.
Published Aug 21, 2025 · catalog updated Feb 26, 2026 · Microsoft Windows Server 2016
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-55231. EPSS is 0.50%. Act only if a listed version of Microsoft Windows Server 2016 is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-53801 · High
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- CVE-2025-53143 · High
- CVE-2025-26677 · High
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.50%
- Remediation
- Version ranges on file
- Affected products
- vendor Microsoft Windows Server 2016 10.0.14393.0 <10.0.14393.8246
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Microsoft Windows Server 2016 10.0.14393.0 <10.0.14393.824610.0.14393.0 <10.0.14393.8246
How to fix CVE-2025-55231
Upgrade
CVE-2025-55231 lists a fix boundary at 10.0.14393.8246. Compare the installed build with that boundary before you change production.
Version check
Seen in 10.0.14393.0 <10.0.14393.8246
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-55231. EPSS is 0.50%. Act only if a listed version of Microsoft Windows Server 2016 is installed.
Which versions are affected?
Compare what you have installed with Microsoft Windows Server 2016 10.0.14393.0 <10.0.14393.8246 10.0.14393.0 <10.0.14393.8246. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.50%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 21, 2025 · EUVD
Detected
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.
Feb 26, 2026 · EUVD
Updated
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.
Sources
- CVE.orgVulnerability recordCVE-2025-55231
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-55231
30-day exploitation probability 0.50%
first.org - EUVDVulnerability recordEUVD-2025-25494
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 23, 2026
- CVE.orgOct 22, 2026
- EUVDOct 22, 2026