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CVE-2026-86857

Authorization Bypass in ServiceNow AI Platform

HIGH
8.4
CVSS Score
Published: September 24, 2026 at 06:37 PM UTC
Updated: September 25, 2026 at 01:37 PM UTC
1 product affected across 1 vendorAI Platform

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Severity
HIGH8.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

AI Platform· Servicenow
60%
v < Australia Patch 2 Hot Fix 4b W32v < Australia Patch 4 Hot Fix 3v < Australia Patch 5v < Yokohama Patch 13 Hot Fix 5av < Zurich Patch 10 Hot Fix 3bv < Zurich Patch 10 Hot Fix 4a W32v < Zurich Patch 11 Hot Fix 3
Affected range stops below Australia Patch 2 Hot Fix 4b W32, so it looks safe — our inference, not a vendor statement
Affected range stops below Australia Patch 4 Hot Fix 3, so it looks safe — our inference, not a vendor statement
Affected range stops below Australia Patch 5, so it looks safe — our inference, not a vendor statement
Affected range stops below Yokohama Patch 13 Hot Fix 5a, so it looks safe — our inference, not a vendor statement
Affected range stops below Zurich Patch 10 Hot Fix 3b, so it looks safe — our inference, not a vendor statement
Affected range stops below Zurich Patch 10 Hot Fix 4a W32, so it looks safe — our inference, not a vendor statement
Affected range stops below Zurich Patch 11 Hot Fix 3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3159623

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGHSN
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-862

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