{"cve":"CVE-2025-27509","nvd":{"published":"2025-03-06T19:15:27.973","modified":"2026-06-17T09:03:43.793","status":"Deferred","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.","cvss_v4":{"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","score":9.3},"cvss_v3":null,"cwes":["CWE-285"],"references":["https://github.com/fleetdm/fleet/commit/718c95e47ad010ad6b8ceb3f3460e921fbfc53bb","https://github.com/fleetdm/fleet/security/advisories/GHSA-52jx-g6m5-h735"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:00:17.429720821+00:00"},"epss":{"cve":"CVE-2025-27509","score":0.00669,"percentile":0.51963,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-52jx-g6m5-h735","url":"https://osv.dev/vulnerability/GHSA-52jx-g6m5-h735","summary":"Fleet has SAML authentication vulnerability due to improper SAML response validation","modified":"2026-02-03T03:11:21.791693Z","packages":[{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":[">=4.64.0 <4.64.2"],"fixed":["4.64.2"]},{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":[">=4.63.0 <4.63.2"],"fixed":["4.63.2"]},{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":[">=4.62.0 <4.62.4"],"fixed":["4.62.4"]},{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":[">=4.54.0 <4.58.1"],"fixed":["4.58.1"]},{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":["<4.53.2"],"fixed":["4.53.2"]}]},{"id":"GO-2025-3505","url":"https://osv.dev/vulnerability/GO-2025-3505","summary":"Fleet has SAML authentication vulnerability due to improper SAML response validation in github.com/fleetdm/fleet","modified":"2025-03-10T19:27:00.912405Z","packages":[{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}