CVE-2026-23518
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment
Fleet is open source device management software. In versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, a vulnerability in Fleet's Windows MDM enrollment flow could allow an attacker to submit forged authentication tokens that are not properly validated. Because JWT signatures were not verified, Fleet could accept attacker-controlled identity claims, enabling enrollment of unauthorized devices under arbitrary Azure AD user identities. Versions 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 fix the issue. If an immediate upgrade is not possible, affected Fleet users should temporarily disable Windows MDM.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
fleet
- Vendor
- fleetdm
- Product
- fleet
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| >= 4.78.0, < 4.78.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.77.0, < 4.77.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.76.0, < 4.76.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.75.0, < 4.75.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| < 4.53.3 | affected | Unavailable | Unavailable | Unavailable | None listed |