Critical CVSS 9.8 EPSS 0.01678 2025-05 archive

Executive Summary

[Spoofable identity claims] Authentication Bypass by Assumed-Immutable Data in Azure DevOps allows an unauthorized attacker to elevate privileges over a network.

Overview

9.8
CVSS CRITICAL
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
Category Elevation of Privilege
Released May 13 2025
Last Updated May 13 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.01678 — 0.74832 percentile
NVD CVSS 9.8 CRITICAL — differs from MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 9.0

EPSS Score

0.01678
probability of exploitation in the next 30 days
0.74832 percentile - updated 2026-08-14
View on FIRST.org

Known Exploits

Acknowledgments

Cameron Vincent with Microsoft