What’s Vulnerable › Vulnerabilities

CVE-2025-55321: Azure Monitor Log Analytics Spoofing Vulnerability

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-09 · updated 2026-10-08
• Weakness: CWE-79

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Azure Monitor allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft Azure Monitor Control Service: all versions
• Microsoft Azure Monitor Control Service: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55321

Get alerted when CVE-2025-55321 or the next vulnerability affects your stack