# CVE-2025-27509

## Summary

- **CVE ID:** CVE-2025-27509
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-285
- **Published:** Mar 6, 2025
- **Last Modified:** Mar 13, 2026

## Description

fleetdm/fleet is an open source device management, built on osquery. In vulnerable versions of Fleet, an attacker could craft a specially-formed SAML response to forge authentication assertions, provision a new administrative user account if Just-In-Time (JIT) provisioning is enabled, or create new accounts tied to forged assertions if f MDM enrollment is enabled. This vulnerability is fixed in 4.64.2, 4.63.2, 4.62.4, and 4.58.1.

## Affected Products

- fleetdm — fleet (>= 4.64.0, < 4.64.2)
- fleetdm — fleet (>= 4.63.0, < 4.63.2)
- fleetdm — fleet (>= 4.62.0, < 4.62.4)
- fleetdm — fleet (< 4.58.1)

## References

- [CNA](https://github.com/fleetdm/fleet/security/advisories/GHSA-52jx-g6m5-h735)
- [CNA](https://github.com/fleetdm/fleet/commit/718c95e47ad010ad6b8ceb3f3460e921fbfc53bb)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.66%
- **EPSS Percentile:** 49.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._