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CVE-2026-18886— Unauthenticated Privilege Escalation via System Configuration Image Upload Processor

Quick assessment

Affected
ServiceNow ServiceNow AI Platform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ServiceNow AI Platform是美国ServiceNow公司的一款AI智能平台。 ServiceNow AI Platform存在安全漏洞，该漏洞源于访问控制不当，可能导致未经身份验证的用户在某些情况下创建或修改超出预期范围的实例数据，造成权限提升。

CVSS 10.0 · Critical EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 15

VendorProduct Version RangeStatus
ServiceNow ServiceNow AI Platform < Xanadu Patch 11 Hot Fix 7a affected
< Yokohama Patch 12 Hot Fix 3b affected
< Yokohama Patch 13 Hot Fix 4 affected
< Zurich Patch 7b Hot Fix 3 affected
< Zurich Patch 8 Hot Fix 5 affected
< Zurich Patch 9 Hot Fix 6 affected
< Zurich Patch 10 Hot Fix 2m (m-branch) affected
< Zurich Patch 10 Hot Fix 3 (standard) affected
… +7 more rows
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I. Basic Information for CVE-2026-18886

Vulnerability Information
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Vulnerability Title
Unauthenticated Privilege Escalation via System Configuration Image Upload Processor
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ServiceNow AI Platform 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ServiceNow AI Platform是美国ServiceNow公司的一款AI智能平台。 ServiceNow AI Platform存在安全漏洞，该漏洞源于访问控制不当，可能导致未经身份验证的用户在某些情况下创建或修改超出预期范围的实例数据，造成权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ServiceNow ServiceNow AI Platform 0 ~ Xanadu Patch 11 Hot Fix 7a -

II. Public POCs for CVE-2026-18886

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III. Intelligence Information for CVE-2026-18886

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Vendor Advisories for CVE-2026-18886 (1)

Same Patch Batch · ServiceNow · 2026-08-27 · 4 CVEs total

CVE-2026-74820 10.0 CRITICAL Unauthenticated SQL Injection via Dynamic Schema ORDER BY Clause
CVE-2026-6876 10.0 CRITICAL Sandbox Escape in ServiceNow AI Platform
CVE-2026-18885 10.0 CRITICAL Unauthenticated Remote Code Execution in GraphQL Composite Data API

IV. Related Vulnerabilities

Same product: ServiceNow AI Platform
Same vendor: ServiceNow

V. Comments for CVE-2026-18886

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