CVE-2026-66314

Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS

0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-25)

CWE

CWE-367

Published

2026-08-04

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• microsoft:edge_chromium

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66314

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