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CVE.org (no NVD analysis yet)· CNA illumos

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

Noroxi assessment

Priority: Monitor (action score 7/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.10% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: illumos illumos-gate 865b58d24a0f1a31c838bffc3a7193d3345fe5ba; OmniOS OmniOS r151054bw, r151056aw, r151058w.

Low priority for now. Upgrade to illumos illumos-gate 865b58d24a0f1a31c838bffc3a7193d3345fe5ba; OmniOS OmniOS r151054bw, r151056aw, r151058w or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 1.9 · v4.0—No exploit Fix available
Published
Oct 9, 2026
Updated
Oct 9, 2026
EPSS
0.1% · 1th percentile

Report tools

JSON

Action score

7

Monitor

Low priority for now.

CVSS
7 / 40 · 1.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · illumos
1.9
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-104116

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (illumos). Independent of NVD's CPE analysis and usually ahead of it.

  • illumos illumos-gate

    • efd4c9b63ad77503c101fc6c2ed8ba96c9d52964 and later · before 865b58d24a0f1a31c838bffc3a7193d3345fe5baaffected · gitfixed in 865b58d24a0f1a31c838bffc3a7193d3345fe5ba

  • OmniOS OmniOS

    • any and later · before r151054affected
    • r151058 and later · before r151058waffectedfixed in r151058w
    • r151056 and later · before r151056awaffectedfixed in r151056aw
    • r151054 and later · before r151054bwaffectedfixed in r151054bw

Same product

illumos: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-15422SCTP needs to better-check INIT ACK chunk parameters
    36Monitor
  • CVE-2023-31284illumos illumos-gate before 676abcb has a stack buffer overflow in /dev/net, leading to privilege escalation via a stat on a long file name
    31Monitor
  • CVE-2026-104112Missing release of passed file descriptors in illumos nscd allows local users to exhaust kernel memory
    27Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-104114Oct 9, 2026 · NULL pointer dereference in illumos nwamd door handler allows local users to crash the daemon
    21Monitor
  • ← EarlierCVE-2026-104115Oct 9, 2026 · Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon
    21Monitor
  • Later →CVE-2026-104117Oct 9, 2026 · Missing authorization in illumos ipmgmtd allows local users to change persistent IPMP group membership
    7Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
illumos illumos-gate865b58d24a0f1a31c838bffc3a7193d3345fe5baVendor (CNA)
OmniOS OmniOSr151054bwVendor (CNA)
OmniOS OmniOSr151056awVendor (CNA)
OmniOS OmniOSr151058wVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 6, 2026+28 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1041170 days apartMissing authorization in illumos ipmgmtd allows local users to change persistent IPMP group membership
    7Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. SSVC exploitation— → none
  2. Exploit maturity— → none
  3. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records