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CVE-2025-48818VulnerabilityPublished Updated

CVE-2025-48818: Microsoft Windows 10 Version 1507 · Time-of-check Time-of-use (TOCTOU) Race Condition

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 6.8 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1507Affected
  • =10.0.10240.0
Fixed in–

AI-suggested

1. Upgrade all affected systems from Windows 10 Version 1507 to a supported and patched Windows version to eliminate the vulnerability. 2. Enforce strict physical security controls to prevent unauthorized physical access to devices, including secure storage, access logging, and surveillance. 3. Implement full disk encryption solutions that are up-to-date and have no known TOCTOU vulnerabilities. 4. Use hardware-based security modules (e.g., TPM chips) properly configured to enhance BitLocker protection. 5. Regularly audit and monitor physical access to critical devices, especially in shared or public environments. 6. Educate employees about the risks of leaving devices unattended and the importance of physical security. 7. If upgrading immediately is not feasible, consider disabling BitLocker temporarily or using alternative encryption until patched versions are deployed. 8. Maintain an inventory of devices running the vulnerable Windows version to prioritize remediation efforts. 9. Monitor security advisories from Microsoft for patches or workarounds related to this vulnerability. 10. Employ endpoint detection and response (EDR) tools to detect suspicious activities that may indicate exploitation attempts.

Description

Time-of-check time-of-use (toctou) race condition in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

References

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