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HIGH · 8.6

CVE-2025-21355

Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network

Vulnerability Description

Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network

CVSS Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftBingAll versions

Related Weaknesses (CWE)

CWE-306

References

FAQ

What is CVE-2025-21355?

CVE-2025-21355 is a vulnerability with a CVSS score of 8.6 (HIGH). Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network

How severe is CVE-2025-21355?

CVE-2025-21355 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-21355?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Bing.