Critical CVSS 8.3 EPSS 0.00639 2025-12 archive

Executive Summary

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

Overview

8.3
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
Category Spoofing
Released Dec 9 2025
Last Updated Dec 9 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00639 — 0.45772 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.2

EPSS Score

0.00639
probability of exploitation in the next 30 days
0.45772 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Azure Cosmos DB Critical Spoofing Unknown

Patches

1 patch
Article Type Restart
Unknown

Known Exploits

Acknowledgments

Jianyang Song