Microsoft Bing
CVE-2025-21355 — Microsoft Bing Remote Code Execution Vulnerability
Executive Summary
Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network
Overview
8.6
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Changed
Temporal Score: 7.7
EPSS Score
0.01503
probability of exploitation in the next 30 days
0.70983 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Bing | — |
Critical | Remote Code Execution | Unknown |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
— |
Unknown |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
nicolas joly
References
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