Unauthenticated privilege escalation
Published May 7, 2026 · Updated May 7, 2026
Improper access control in Microsoft Foundry M365 published agents allows remote attackers to elevate privileges over a network. Microsoft has not published the affected authorization locus or the incorrect operation performed when a published agent is accessed. No authentication or user interaction is required, and the vendor assessment limits the reported consequence to unauthorized disclosure of sensitive information.
Summary
What happened
Improper access control in Microsoft Foundry M365 published agents allows remote attackers to elevate privileges over a network. Microsoft has not published the affected authorization locus or the incorrect operation performed when a published agent is accessed. No authentication or user interaction is required, and the vendor assessment limits the reported consequence to unauthorized disclosure of sensitive information.
The record
- CVE
- CVE-2026-35435
- Published
- May 7, 2026
- Updated
- May 7, 2026
- Vendor
- Microsoft
- Product
- Microsoft Foundry
- Classifications
- CWE-284, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 7, 2026CVE publishedPublication date reported by the CVE source.
- May 7, 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?
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- Affected versionversion=-
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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