# CVE-2026-86859

Auth bypass in ServiceNow AI Platform allows unauthenticated data access.

- Page: https://www.vulneraibility.com/cve/CVE-2026-86859
- CVSS: 8.7
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.30% (percentile 22.9)
- CISA SSVC: exploitation none, automatable yes, technical impact partial (assessed 2026-09-24)
- Weakness: CWE-284
- Published: 2026-09-24

## Affected versions

- ServiceNow ServiceNow AI Platform: affected < Yokohama Patch 13 Hot Fix 5a; < Zurich Patch 10 Hot Fix 3b; < Zurich Patch 10 Hot Fix 4a W32; < Zurich Patch 11 Hot Fix 3; < Australia Patch 2 Hot Fix 4b W32; < Australia Patch 4 Hot Fix 3; < Australia Patch 5

A version outside these ranges is not a statement that it is unaffected.

## Impact

Unauthenticated attacker can bypass authorization to read restricted AI Platform data, enabling data exfiltration and potential lateral escalation.

## Action

Immediate action required

## Recommendation

Apply ServiceNow security update immediately; review access logs and privileges.

## References

- [other] https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3159623

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.