CVE-2026-66317

medium Microsoft
CVSS v3 Base Score
5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS Score
0.2%
Exploitation probability in 30 days
Top 88% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Published: August 4, 2026 (34 days ago)
Last Modified: August 6, 2026
Vendor: Microsoft
Source: NVD

Description

Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.

CWE

CWE-346

Affected Products

microsoft edge chromium

References

🔗 msrc.microsoft.com