Low 1.9Published Oct 9, 2026

CVE-2026-104116Missing authorization in illumos zonestatd allows local users to disrupt zonestat and enumerate running zones

Updated under an hour ago (Oct 27, 2026, 10:40 PM ET)

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Exploited in the last 30 days

A missing authorization check in the illumos zones statistics daemon (zonestatd) allows a local user in any zone to disrupt zonestat in other zones and to determine which zones are running. The zonestatd door server procedure, zsd_server() in usr/src/cmd/zonestat/zonestatd/zonestatd.c, handles the ZSD_CMD_NEW_ZONE command, which is intended to be sent by zoneadmd, without checking the caller's credentials. Because the zonestatd door is accessible to all users in every zone, an unprivileged user can send this command with an arbitrary zone ID, causing zonestatd to re-create its door file in that zone, so that new zonestat requests in that zone can fail while the file is replaced. The time taken to handle the command also reveals whether a given zone ID belongs to a running zone. The flaw has existed since 2010 (illumos-gate commit efd4c9b6), and affects any illumos distribution prior to illumos-gate commit 865b58d2.

CVSS: 1.9 LOW (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: illumos
NVD analysis: Awaiting Analysis
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

illumos illumos-gate illumos:gate (from the name)	from efd4c9b63ad77503c101fc6c2ed8ba96c9d52964 before 865b58d24a0f1a31c838bffc3a7193d3345fe5ba; fixed at 865b58d24a0f1a31c838bffc3a7193d3345fe5ba	CNA record
OmniOS OmniOS omnios:omnios (from the name)	from any before r151054; from r151058 before r151058w; fixed at r151058w; from r151056 before r151056aw; fixed at r151056aw; from r151054 before r151054bw; fixed at r151054bw	CNA record

References

References

https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers	mailing-list
https://illumos.org/issues/18493	issue-tracking
https://github.com/illumos/illumos-gate/commit/865b58d24a0f1a31c838bffc3a7193d3345fe5ba	patch

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.