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CVE-2026-86857— Authorization Bypass in ServiceNow AI Platform

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 已修复其在 ServiceNow AI 平台中发现的一项授权绕过安全漏洞。若被恶意利用，该漏洞可使经过身份验证的用户访问其本无权访问的 ServiceNow AI 平台数据，进而可能导致进一步的未授权访问。 ServiceNow 已向托管实例部署更新，并将该更新提供给合作伙伴及自托管客户。截至目前，我们未发现针对 ServiceNow 实例的恶意利用行为。我们建议客户在尚未执行相应操作时，尽快应用适当的更新或升级到已修补的版本。

CVSS 8.4 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 7

VendorProduct Version RangeStatus
ServiceNow ServiceNow AI Platform < Yokohama Patch 13 Hot Fix 5a affected
< Zurich Patch 10 Hot Fix 3b affected
< Zurich Patch 10 Hot Fix 4a W32 affected
< Zurich Patch 11 Hot Fix 3 affected
< Australia Patch 2 Hot Fix 4b W32 affected
< Australia Patch 4 Hot Fix 3 affected
< Australia Patch 5 affected
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I. Basic Information for CVE-2026-86857

Vulnerability Information
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Vulnerability Title
Authorization Bypass in ServiceNow AI Platform
Source: CVE Program / CVE List V5
Vulnerability Description
ServiceNow has remediated an authorization bypass security issue that was identified in the ServiceNow AI Platform. This security issue, if exploited, could enable an authenticated user to access data within the ServiceNow AI Platform that the user otherwise would not be entitled to access, potentially enabling further unintended access. ServiceNow deployed an update to hosted instances, and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of malicious 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:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ServiceNow ServiceNow AI Platform 0 ~ Yokohama Patch 13 Hot Fix 5a -

II. Public POCs for CVE-2026-86857

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III. Intelligence Information for CVE-2026-86857

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Vendor Advisories for CVE-2026-86857 (1)

Same Patch Batch · ServiceNow · 2026-09-24 · 5 CVEs total

CVE-2026-86860 9.3 CRITICAL Unauthenticated Sensitive Data Disclosure in ServiceNow AI Platform
CVE-2026-13016 9.3 CRITICAL Unauthenticated SQL Injection in ServiceNow AI Platform
CVE-2026-86859 8.7 HIGH Unauthenticated Arbitrary Record Disclosure in ServiceNow AI Platform
CVE-2026-86858 8.7 HIGH Unauthenticated Privilege Escalation via GraphQL in ServiceNow AI Platform

IV. Related Vulnerabilities

Same product: ServiceNow AI Platform
Same vendor: ServiceNow

V. Comments for CVE-2026-86857

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