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CVE-2026-18886

Unauthenticated Privilege Escalation via System Configuration Image Upload Processor

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 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, and 10 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • ServiceNow ServiceNow AI Platform

    fixed in Xanadu Patch 11 Hot Fix 7a; fixed in Yokohama Patch 12 Hot Fix 3b; fixed in Yokohama Patch 13 Hot Fix 4; fixed in Zurich Patch 7b Hot Fix 3; fixed in Zurich Patch 8 Hot Fix 5; fixed in Zurich Patch 9 Hot Fix 6; fixed in Zurich Patch 10 Hot Fix 2m (m-branch); fixed in Zurich Patch 10 Hot Fix 3 (standard); fixed in Zurich Patch 11; fixed in Zurich Patch 12; fixed in Australia Patch 2 Hot Fix 3; fixed in Australia Patch 3 Hot Fix 2; fixed in Australia Patch 3m; fixed in Australia Patch 4; fixed in Australia Patch 5

References 1

support.servicenow.com