CVE-2026-23998
Windows MDM management endpoint authentication bypass in github.com/fleetdm/fleet/v4
7.5
HIGH
CVSS 3.1
EPSS 0.01%
Description
Windows MDM management endpoint authentication bypass in github.com/fleetdm/fleet/v4
How to fix CVE-2026-23998
To remediate CVE-2026-23998, upgrade the affected package to a fixed version below.
- Go/github.com/fleetdm/fleet/v4—upgrade to 4.81.0 or later
- Go/github.com/fleetdm/fleet/v4—upgrade to 4.81.0 or later
Is CVE-2026-23998 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.81.0
- from 0, < 4.81.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |