Critical severity · published Mar 6, 2025
CVE-2025-27509
SAML authentication vulnerability due to improper SAML response validation
9.3
CVSS
0.7%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
fleet · fleetdm
>= 4.64.0, < 4.64.2; >= 4.63.0, < 4.63.2; >= 4.62.0, < 4.62.4; < 4.58.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-27509
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-27509
github.com
https://github.com/fleetdm/fleet/commit/718c95e47ad010ad6b8ceb3f3460e921fbfc53bb
github.com
https://github.com/fleetdm/fleet/security/advisories/GHSA-52jx-g6m5-h735
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