High 7.5Published Oct 17, 2026

CVE-2026-111923Fleet before 4.89.0 Unauthenticated DoS via Apple MDM Enrollment Plist Parsing

Updated under an hour ago (Oct 28, 2026, 8:00 AM ET)

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It affects fleetdm fleet. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.36%, higher than 29% of scored CVEs.

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Exploited in the last 30 days

Fleet before 4.89.0 contains an unbounded recursion vulnerability in Apple MDM enrollment property list parsing that allows unauthenticated attackers to crash the server. Attackers can send a crafted binary plist payload of about 150 bytes to the enrollment endpoints, triggering exponential allocation or infinite recursion that exhausts CPU and memory.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-674
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.36% (percentile 29)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 17, 2026

Affected products

Affected products

fleetdm fleet fleetdm:fleet (from the name)	before 4.89.0; 4.89.0 not affected	CNA record

References

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-x467-vgxf-2g6h	vendor-advisory
https://www.vulncheck.com/advisories/fleet-before-4.89.0-unauthenticated-dos-via-apple-mdm-enrollment-plist-parsing	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.