EUVD Vulnerability Catalog

EUVD-2026-86403

Severity: CRITICAL Base Score: 9.3 CVSS Version: 4.0

Vulnerability Description

ServiceNow has remediated a missing authorization vulnerability that was identified in the ServiceNow AI Platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to extract 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 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.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

▪ Attack Vector (AV): Network
▪ Attack Complexity (AC): Low
▪ Attack Requirements (AT): None
▪ Privileges Required (PR): None
▪ User Interaction (UI): None
▪ Vulnerability Confidentiality Impact (VC): High
▪ Vulnerability Integrity Impact (VI): None
▪ Vulnerability Availability Impact (VA): None
▪ Subsequent Confidentiality Impact (SC): High
▪ Subsequent Integrity Impact (SI): High
▪ Subsequent Availability Impact (SA): None

Affected Vendors & Systems

Vendor Servicenow

References & Advisory Links

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

SN

EPSS Probability

0

Known Aliases
CVE-2026-86860
Published On

2026-09-24

Last Updated

2026-09-24