CVE-2025-21355

EUVD-2025-4643
Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
microsoftCNA
8.6 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
Base Score
CVSS 3.x
EPSS Score
Percentile: 89%
Affected Products (NVD)
VendorProductVersion
microsoftbing
*
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21355