CVE-2026-86858Network attack vector

Unauthenticated instance-data manipulation via improper access control

Published Sep 24, 2026 · Updated Sep 24, 2026

Improper access control in ServiceNow AI Platform allows remote attackers to create, modify, or delete instance data without authentication. ServiceNow has not publicly identified the affected component or the access-control operation that mishandles requests. Exploitation requires unspecified circumstances and permits unauthorized data changes, but no code execution or broader platform control is reported.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Oct 20, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in ServiceNow AI Platform allows remote attackers to create, modify, or delete instance data without authentication. ServiceNow has not publicly identified the affected component or the access-control operation that mishandles requests. Exploitation requires unspecified circumstances and permits unauthorized data changes, but no code execution or broader platform control is reported.

The record

CVE
CVE-2026-86858
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
ServiceNow
Product
ServiceNow AI Platform
Classifications
T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <Australia Patch 2 Hot Fix 4b W32
  2. Affected versionversion=0 <Australia Patch 4 Hot Fix 3
  3. Affected versionversion=0 <Australia Patch 5
  4. Affected versionversion=0 <Yokohama Patch 13 Hot Fix 5a
  5. Affected versionversion=0 <Zurich Patch 10 Hot Fix 3b
  6. Affected versionversion=0 <Zurich Patch 10 Hot Fix 4a W32
  7. Affected versionversion=0 <Zurich Patch 11 Hot Fix 3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ServiceNow · ServiceNow AI Platformversion=0 <Australia Patch 2 Hot Fix 4b W32; version=0 <Australia Patch 4 Hot Fix 3; version=0 <Australia Patch 5; version=0 <Yokohama Patch 13 Hot Fix 5a; version=0 <Zurich Patch 10 Hot Fix 3b; version=0 <Zurich Patch 10 Hot Fix 4a W32; version=0 <Zurich Patch 11 Hot Fix 3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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