CVE-2025-21384
Published: 01 April 2025
Summary
CVE-2025-21384 is a high-severity Protection Mechanism Failure (CWE-693) vulnerability in Microsoft Azure Health Bot. Its CVSS base score is 8.3 (High).
Operationally, ranked in the top 18.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
An authenticated attacker can exploit a Server-Side Request Forgery (SSRF) vulnerability in Microsoft Azure Health Bot to elevate privileges over a network. The flaw is tracked as CVE-2025-21384 with a CVSS 3.1 score of 8.3 and is associated with CWE-693 and CWE-918.
The attack requires low complexity, low-privileged network access, and no user interaction. Successful exploitation can result in high impact to confidentiality and integrity along with limited impact to availability.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21384 is the authoritative source for mitigation guidance. The EPSS score remains flat at a peak and current value of 0.0145 with no material rise after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-9061
Vulnerability details
An authenticated attacker can exploit an Server-Side Request Forgery (SSRF) vulnerability in Microsoft Azure Health Bot to elevate privileges over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Detects server-side request forgery through monitoring of unexpected outbound connections.
Implements a reliable, tamperproof protection mechanism whose completeness can be assured.
Procedures for training on protection mechanisms reduce the chance of protection mechanism failures being present or exploitable.
Documented procedures to implement assessment, authorization, and monitoring controls prevent these protection mechanisms from failing due to undefined processes.
Direct evaluation of whether controls produce desired security outcomes detects protection mechanism failures and enables remediation.
Requires assessment that protection mechanisms are correctly implemented and producing intended security outcomes.
The POA&M process ensures identified weaknesses in protection mechanisms are documented and scheduled for remediation, reducing the duration they remain exploitable.
Ongoing control assessments and analysis of monitoring data enable timely detection and response when protection mechanisms fail.