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
Not known to be exploited · CVSS 6.8 Medium.
Data as of 25 Oct 2026, 19:02 UTC
- 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:CExploitation evidence
Disclosed: evidence found.
CVE published 8 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | Affected
| 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.