CVE-2025-21384Network attack vector

Authenticated privilege escalation via server-side request forgery

Published Apr 1, 2025 · Updated Feb 26, 2026

Server-side request forgery in Microsoft Azure Health Bot allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected component or the operation that mishandles attacker-controlled requests. Exploitation requires authenticated access to the exclusively hosted service and can compromise confidentiality and integrity while interrupting service availability.

CVSS severity8.3
High
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Server-side request forgery in Microsoft Azure Health Bot allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected component or the operation that mishandles attacker-controlled requests. Exploitation requires authenticated access to the exclusively hosted service and can compromise confidentiality and integrity while interrupting service availability.

The record

CVE
CVE-2025-21384
Published
Apr 1, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Azure Health Bot
Classifications
CWE-918, CWE-693, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 privilegesauthenticated

What is affected?

Microsoft · Azure Health Botversion=-

Published CVSS scores

8.3Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CWE-693Protection Mechanism Failure
T1068Exploitation for Privilege Escalation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo