CVE-2025-27509CWE-285

SAML authentication vulnerability due to improper SAML response validation

Critical · published March 6, 2025

CVSS v4.0
9.3
EPSS
1%
Percentile
51.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.00669 · 51.3th percentile
Weakness
CWE-285 · Improper Authorization
Published
2025-03-06T19:00Z
EPSS history
Timeline
  • 06 MAR 19:00Z
    SAML authentication vulnerability due to improper SAML response validation
    cvelistv5