What’s Vulnerable › Vulnerabilities

CVE-2025-21355: Microsoft Bing Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-19 · updated 2026-06-17
• Weakness: CWE-306

Description

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

Affected products

• Microsoft Bing: all versions
• Microsoft Bing: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21355

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