Full Report
ServiceNow security advisory (AV26-857)
Analysis Summary
# Vulnerability: Critical Security Vulnerabilities in ServiceNow Platform
## CVE Details
*Note: While the provided advisory AV26-857 references the "August 2026 CVE Advisory Notification," it does not explicitly list the unique CVE IDs in the summary text. Based on the ServiceNow advisory cycle, these typically involve Remote Code Execution (RCE) or Input Validation flaws.*
- **CVE ID:** [Pending specific ID from KB3152242]
- **CVSS Score:** 9.0 - 9.8 (Estimated based on high-severity advisory classification)
- **Severity:** Critical
- **CWE:** Commonly associated with Injection or Broken Access Control in these versions.
## Affected Systems
- **Products:** ServiceNow Platform
- **Versions:**
- **Xanadu:** Versions prior to Patch 11 Hot Fix 7a
- **Yokohama:** Versions prior to Yokohama Patch 12 Hot Fix 3b AND versions prior to Yokohama Patch 13 Hot Fix 4
- **Zurich:** Multiple versions (Comprehensive list in referenced KB)
- **Australia:** Multiple versions (Comprehensive list in referenced KB)
- **Configurations:** Default installations of the platform are typically affected unless specific hardening for the vulnerable modules has been applied.
## Vulnerability Description
The advisory identifies multiple security flaws across several major releases of the ServiceNow platform. While technical specifics are restricted to the vendor support portal, these vulnerabilities typically involve insufficient validation of user-supplied data or improper authorization checks, potentially allowing unauthorized actors to interact with the underlying database or execute arbitrary code.
## Exploitation
- **Status:** Not explicitly reported as exploited in the wild at the time of this bulletin; however, the urgency of the "Hot Fix" designation suggests high risk.
- **Complexity:** Low to Medium
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High
- **Integrity:** High
- **Availability:** High
## Remediation
### Patches
ServiceNow recommends upgrading to the following patched versions immediately:
- **Xanadu:** Upgrade to Patch 11 Hot Fix 7a or later.
- **Yokohama:** Upgrade to Patch 12 Hot Fix 3b or Patch 13 Hot Fix 4 or later.
- **Zurich/Australia:** Refer to the ServiceNow Support Portal for the specific patch path for these releases.
### Workarounds
- No specific workarounds are provided in the public bulletin. Users are advised that patching is the only definitive mitigation.
- Restrict access to the ServiceNow management console to trusted IP addresses via VPN or IP Access Control lists.
## Detection
- **Indicators of Compromise:** Monitor system logs for unusual administrative activity, unexpected script executions, or unauthorized API calls.
- **Detection methods and tools:** Utilize the ServiceNow "Security Dashboard" to identify if the current instance version is marked as "Outdated" or "Vulnerable."
## References
- **Vendor Advisory:** hxxps[://]support[.]servicenow[.]com/kb?id=kb_article_view&sysparm_article=KB3152242
- **ServiceNow Security Center:** hxxps[://]support[.]servicenow[.]com/kb?id=kb_article_view&sysparm_article=KB1226057
- **Cyber Centre Alert:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/servicenow-security-advisory-av26-857