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ServiceNow AI Platform EUVDEUVD-2026-67219

| CVE-2026-18885 CRITICAL
Code Injection (CWE-94)
2026-08-27 SN GHSA-pc3p-j9w8-jrpg
10.0
CVSS 4.0 · Vendor: SN
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach exposed ServiceNow AI Platform instance
  2. Delivery
    Send crafted request to vulnerable feature
  3. Exploit
    Inject code into server-side evaluation
  4. Execution
    Execute arbitrary code in instance context
  5. Impact
    Read or modify instance data beyond authorization

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Code injection prevention, sandbox exec
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The CVSS metrics (AV:N/AC:L/AT:N/PR:N/UI:N) describe unauthenticated, no-interaction, low-complexity network exploitation against the ServiceNow AI Platform, but the vendor explicitly limits this to 'certain circumstances' that it does not name - meaning a specific, undisclosed feature state, configuration, or deployment mode of the AI Platform is likely required rather than every default instance being trivially exploitable. Concretely, exploitation requires network reachability to a ServiceNow instance running the AI Platform component and that the instance be in the unspecified vulnerable condition; the primary limiting factor is this vendor-noted conditional precondition, and hosted instances are already remediated so the practical exposure is concentrated in unpatched self-hosted/partner-managed instances. The exact triggering circumstance should be confirmed directly with ServiceNow before assuming default-configuration exploitability.

Impact

Every static signal points to top-tier priority: CVSS 4.0 is 10.0 with AV:N/AC:L/AT:N/PR:N/UI:N and high impact across both the vulnerable system (VC:H/VI:H/VA:H) and subsequent systems (SC:H/SI:H/SA:H), indicating unauthenticated, low-complexity, no-interaction network exploitation with full compromise and cross-boundary impact. Tags confirm RCE. Counterbalancing this, the vendor description qualifies exploitation as possible only 'in certain circumstances,' which conflicts with the AC:L/AT:N metrics and suggests a real-world precondition the vendor has not disclosed - verify scope with ServiceNow. No EPSS score, no CISA KEV listing, and no known public exploit or POC are present in the data, and ServiceNow reports no observed malicious exploitation; this tempers immediate in-the-wild urgency but does not lower the severity of the underlying flaw, especially since hosted instances were already auto-patched, implying the vendor treated it as critical.

Exploit ScenarioDerived

An attacker who can reach an internet-exposed ServiceNow AI Platform instance sends a crafted request to a vulnerable AI Platform feature, injecting code that the platform evaluates server-side. Because no authentication or user interaction is required (PR:N/UI:N), the injected code executes in the instance context, letting the attacker read or alter instance data beyond intended limits. No public POC exists at time of analysis, but the low attack complexity means a working exploit would be straightforward to operationalize if the required circumstances are met.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 27, 2026

Remote code execution in the ServiceNow AI Platform lets an unauthenticated attacker, under certain unspecified circumstances, inject and run arbitrary code within a ServiceNow instance and read or modify instance data beyond intended authorization boundaries. ServiceNow rates it CVSS 4.0 10.0 (maximum) with a fully unauthenticated network vector and total confidentiality, integrity, and availability impact including subsequent-system impact. There is no public exploit identified at time of analysis, and ServiceNow states it is not currently aware of malicious exploitation.

RemediationAI

Patch available per vendor advisory: ServiceNow has already deployed the fix to hosted instances and made the update available to partners and self-hosted customers, so administrators of self-managed or partner-managed instances should promptly apply the appropriate update or upgrade to a patched release per ServiceNow KB3152242 (https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3152242); an exact fixed version string is not provided in the input and should be confirmed against your instance in that advisory. As compensating controls pending patching, restrict network exposure of the instance by limiting access to the AI Platform endpoints to trusted networks or via IP allow-listing and WAF rules that block anomalous script/code-injection payloads, tighten inbound access to any unauthenticated-reachable AI Platform features, and increase monitoring of instance logs for unexpected script execution or data modification - noting these controls reduce but do not eliminate risk and may disrupt legitimate integrations or external users of AI-driven features.

Affected VersionsENISA

ServiceNow AI Platform 0 <Yokohama Patch 12 Hot Fix 3b
ServiceNow AI Platform 0 <Zurich Patch 12
ServiceNow AI Platform 0 <Australia Patch 3 Hot Fix 2
ServiceNow AI Platform 0 <Australia Patch 5
ServiceNow AI Platform 0 <Xanadu Patch 11 Hot Fix 7a
ServiceNow AI Platform 0 <Yokohama Patch 13 Hot Fix 4
ServiceNow AI Platform 0 <Australia Patch 4
ServiceNow AI Platform 0 <Zurich Patch 8 Hot Fix 5
ServiceNow AI Platform 0 <Zurich Patch 10 Hot Fix 3 (standard)
ServiceNow AI Platform 0 <Australia Patch 2 Hot Fix 3
ServiceNow AI Platform 0 <Australia Patch 3m
ServiceNow AI Platform 0 <Zurich Patch 9 Hot Fix 6
ServiceNow AI Platform 0 <Zurich Patch 11
ServiceNow AI Platform 0 <Zurich Patch 10 Hot Fix 2m (m-branch)
ServiceNow AI Platform 0 <Zurich Patch 7b Hot Fix 3

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the ServiceNow AI Platform (CPE cpe:2.3:a:servicenow:servicenow_ai_platform), the AI/automation layer built on top of ServiceNow's Now Platform used for enterprise workflow, ITSM, and low-code application delivery. The flaw is a code injection vulnerability (functionally CWE-94, 'Improper Control of Generation of Code'; the input record lists CWE as N/A), meaning attacker-controlled input reaches a code-execution or evaluation context - a long-standing risk area in ServiceNow given its server-side scripting engine (GlideScript/Jelly-style evaluation) and dynamic content processing. Successful injection yields arbitrary code execution in the platform's execution context rather than a sandboxed subset.

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Severity by source

Vendor (SN) PRIMARY 10.0 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
vuln.today AI 10.0 CRITICAL

Unauthenticated network code injection with full impact and access to data beyond intended scope justifies S:C and C/I/A:H; AC:L per vendor metrics though 'certain circumstances' hints at a possible precondition.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (SN).

CVSS VectorVendor: SN

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
High
Subsequent system: Integrity
High
Subsequent system: Availability
High

DescriptionCVE.org

ServiceNow has remediated a code injection vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to execute arbitrary code in the ServiceNow platform and gain access to, or modify, instance data beyond what was intended.

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.

Executive ViewAI

Why It Matters

ServiceNow AI Platform is exposed to a critical, unauthenticated remote code execution vulnerability (CVE-2026-18885, CVSS 10.0) that enables attackers to gain complete control of instances and access sensitive operational and customer data without authentication. Organizations using ServiceNow face immediate risk of data theft, operational disruption, and compliance violations. Urgent action is required as no vendor patch is currently available.

Business Impact: Severe
Compensating Controls

Restrict network access to ServiceNow AI Platform instances to known, trusted IP ranges using IP allowlisting; deploy Web Application Firewall (WAF) rules to detect and block exploitation attempts; disable AI Platform modules if operationally non-critical; enable comprehensive audit logging with daily manual review for suspicious access patterns and injection attempts; establish 24/7 monitoring for exploitation indicators; implement incident response procedures for confirmed compromise. These controls reduce but do not eliminate risk-patch deployment must become the top priority when the vendor releases a fix.

Threat Intelligence Overview

EPSS Score
0.4%
Top 69% exploitable
Prevalence
High
ServiceNow is widely deployed enterprise SaaS; AI Platform is a newer subset feature
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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