CVSS 4.0
9.3 criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2025-27509
Critical (9.3). EPSS 0.7% chance of exploitation in the next 30 days. Fixed in github.com/fleetdm/fleet/v4 4.53.2, 4.58.1, 4.62.4.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
- CWE
- CWE-285
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-52jx-g6m5-h735 | Go | github.com/fleetdm/fleet/v4 | >=4.64.0 <4.64.2 | 4.64.2 |
| GHSA-52jx-g6m5-h735 | Go | github.com/fleetdm/fleet/v4 | >=4.63.0 <4.63.2 | 4.63.2 |
| GHSA-52jx-g6m5-h735 | Go | github.com/fleetdm/fleet/v4 | >=4.62.0 <4.62.4 | 4.62.4 |
| GHSA-52jx-g6m5-h735 | Go | github.com/fleetdm/fleet/v4 | >=4.54.0 <4.58.1 | 4.58.1 |
| GHSA-52jx-g6m5-h735 | Go | github.com/fleetdm/fleet/v4 | <4.53.2 | 4.53.2 |
| GO-2025-3505 | Go | github.com/fleetdm/fleet/v4 | all versions | no fix published |