Answer in brief
CVE-2026-18886 records a Critical severity (CVSS 10.0) vulnerability in Unauthenticated Privilege Escalation via System Configuration Image Upload Processor. The current sources do not mark it as known exploited. The current feed maps ServiceNow/ServiceNow AI Platform (generic), ServiceNow/ServiceNow AI Platform (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ServiceNow/ServiceNow AI Platform (generic), ServiceNow/ServiceNow AI Platform (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ServiceNow/ServiceNow AI Platformgeneric | >=0 <Xanadu Patch 11 Hot Fix 7a || >=0 <Yokohama Patch 12 Hot Fix 3b || >=0 <Yokohama Patch 13 Hot Fix 4 || >=0 <Zurich Patch 7b Hot Fix 3 || >=0 <Zurich Patch 8 Hot Fix 5 || >=0 <Zurich Patch 9 Hot Fix 6 || >=0 <Zurich Patch 10 Hot Fix 2m (m-branch) || >=0 <Zurich Patch 10 Hot Fix 3 (standard) || >=0 <Zurich Patch 11 || >=0 <Zurich Patch 12 || >=0 <Australia Patch 2 Hot Fix 3 || >=0 <Australia Patch 3 Hot Fix 2 || >=0 <Australia Patch 3m || >=0 <Australia Patch 4 | Xanadu Patch 11 Hot Fix 7a, Yokohama Patch 12 Hot Fix 3b, Yokohama Patch 13 Hot Fix 4, Zurich Patch 7b Hot Fix 3, Zurich Patch 8 Hot Fix 5, Zurich Patch 9 Hot Fix 6, Zurich Patch 10 Hot Fix 2m (m-branch), Zurich Patch 10 Hot Fix 3 (standard), Zurich Patch 11, Zurich Patch 12, Australia Patch 2 Hot Fix 3, Australia Patch 3 Hot Fix 2, Australia Patch 3m, Australia Patch 4, Xanadu, Yokohama, Zurich, Australia |
| ServiceNow/ServiceNow AI Platformgeneric | >=0 <Xanadu Patch 11 Hot Fix 7a || >=0 <Yokohama Patch 12 Hot Fix 3b || >=0 <Yokohama Patch 13 Hot Fix 4 || >=0 <Zurich Patch 7b Hot Fix 3 || >=0 <Zurich Patch 8 Hot Fix 5 || >=0 <Zurich Patch 9 Hot Fix 6 || >=0 <Zurich Patch 10 Hot Fix 2m (m-branch) || >=0 <Zurich Patch 10 Hot Fix 3 (standard) || >=0 <Zurich Patch 11 || >=0 <Zurich Patch 12 || >=0 <Australia Patch 2 Hot Fix 3 || >=0 <Australia Patch 3 Hot Fix 2 || >=0 <Australia Patch 3m || >=0 <Australia Patch 4 || >=0 <Australia Patch 5 | Xanadu Patch 11 Hot Fix 7a, Yokohama Patch 12 Hot Fix 3b, Yokohama Patch 13 Hot Fix 4, Zurich Patch 7b Hot Fix 3, Zurich Patch 8 Hot Fix 5, Zurich Patch 9 Hot Fix 6, Zurich Patch 10 Hot Fix 2m (m-branch), Zurich Patch 10 Hot Fix 3 (standard), Zurich Patch 11, Zurich Patch 12, Australia Patch 2 Hot Fix 3, Australia Patch 3 Hot Fix 2, Australia Patch 3m, Australia Patch 4, Australia Patch 5, Xanadu, Yokohama, Zurich, Australia |
Published upstream
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 27, 2026
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.
Quoted source text, attributed separately from HOL analysis.