PatchTheCVECVE-2026-103264: Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hos
CVE-2026-103264 is a critical-severity flaw (CVSS 9.1) affecting fleet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hostnames and hardware serials as authentication tokens in addition to device UUIDs. Unauthenticated attackers who know or guess these non-secret identifiers can authenticate as iOS/iPadOS hosts to read device data and trigger device-scoped actions including software installation and MDM migration.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 76%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2026-10-01 |
| Last modified | 2026-10-08 |
Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-103264?
fleet: upgrade to 4.87.0. Exact commands for each OS are on this page.
Is CVE-2026-103264 being exploited?
CVE-2026-103264 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-103264 affect?
CVE-2026-103264 affects fleet. Severity is critical (CVSS 9.1). Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hostnames and hardware serials as authentication tokens in addition to device UUIDs. Unauthenticated attackers who know or guess thes
How urgent is CVE-2026-103264?
Priority 43/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
iOS vulnerabilities · iPadOS vulnerabilities
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