CVE-2025-29813Network attack vector

Unauthenticated privilege escalation via spoofable identity claims

Published May 8, 2025 · Updated Feb 26, 2026

Authentication bypass in Microsoft Azure DevOps allows remote attackers to elevate privileges by spoofing identity claims over a network. Azure DevOps trusts attacker-controlled identity data as immutable during authentication, but Microsoft has not disclosed the exact claim, endpoint, or failed validation. No credentials or user interaction are required, and successful exploitation grants elevated privileges in the exclusively hosted service.

CVSS severity10.0
Critical
EPSS probability1.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Microsoft Azure DevOps allows remote attackers to elevate privileges by spoofing identity claims over a network. Azure DevOps trusts attacker-controlled identity data as immutable during authentication, but Microsoft has not disclosed the exact claim, endpoint, or failed validation. No credentials or user interaction are required, and successful exploitation grants elevated privileges in the exclusively hosted service.

The record

CVE
CVE-2025-29813
Published
May 8, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Azure DevOps
Classifications
CWE-302, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Azure DevOpsversion=-

Published CVSS scores

10.0MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-302Authentication Bypass by Assumed-Immutable Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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