Vulnerability Intelligence Report
Unauthenticated Privilege Escalation via System Configuration Image Upload Processor
CVE-2026-18886
ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to create or modify instance data beyond what was intended, resulting in privilege escalation. ServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of exploitation against ServiceNow instances. We recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
EPSS Probability:0.25%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-284 ↗CWE-284 Improper Access Control
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| ServiceNow | ServiceNow AI Platform | 0 < Xanadu Patch 11 Hot Fix 7a (affected), 0 < Yokohama Patch 12 Hot Fix 3b (affected), 0 < Yokohama Patch 13 Hot Fix 4 (affected), 0 < Zurich Patch 7b Hot Fix 3 (affected), 0 < Zurich Patch 8 Hot Fix 5 (affected), 0 < Zurich Patch 9 Hot Fix 6 (affected), 0 < Zurich Patch 10 Hot Fix 2m (m-branch) (affected), 0 < Zurich Patch 10 Hot Fix 3 (standard) (affected), 0 < Zurich Patch 11 (affected), 0 < Zurich Patch 12 (affected), 0 < Australia Patch 2 Hot Fix 3 (affected), 0 < Australia Patch 3 Hot Fix 2 (affected), 0 < Australia Patch 3m (affected), 0 < Australia Patch 4 (affected), 0 < Australia Patch 5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.247%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | ServiceNow · Hosted Service · USA |
| Reserved | 2026-08-04T19:02:05 |
| Published | 2026-08-27T19:00:01 |
| Last Updated | 2026-09-02T22:07:23 |
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