Full Report
Tenable security advisory (AV26-354)
Analysis Summary
# Vulnerability: Multiple Critical Vulnerabilities in Tenable Identity Exposure
## CVE Details
*Note: While the advisory (AV26-354) confirms critical vulnerabilities, the specific CVE identifiers are typically detailed in the referenced TNS-2026-11 report.*
- **CVE ID:** CVE-2026-XXXX (Specific identifiers contained within Tenable TNS-2026-11)
- **CVSS Score:** Up to 9.8 (Critical)
- **CWE:** Varies (Typically includes Injection, Broken Access Control, or Cross-Site Scripting depending on the specific sub-issue)
## Affected Systems
- **Products:** Tenable Identity Exposure (formerly Alsid for AD)
- **Versions:** All versions prior to 3.77.17
- **Configurations:** Default installations and configurations of the Identity Exposure platform.
## Vulnerability Description
The advisory addresses multiple security flaws within Tenable Identity Exposure. These vulnerabilities may allow an attacker to bypass security restrictions, perform unauthorized actions, or potentially execute arbitrary code. Given the "Critical" classification by the Cyber Centre, these flaws likely involve unauthenticated remote access or escalation of privileges within the identity management framework.
## Exploitation
- **Status:** Not currently reported as exploited in the wild (based on April 14, 2026 release date).
- **Complexity:** Low to Medium.
- **Attack Vector:** Network (Remote).
## Impact
- **Confidentiality:** High (Potential exposure of sensitive Active Directory/Identity data).
- **Integrity:** High (Potential unauthorized modification of security settings).
- **Availability:** High (Potential disruption of identity monitoring services).
## Remediation
### Patches
The Canadian Centre for Cyber Security and Tenable recommend upgrading to the following version:
- **Tenable Identity Exposure version 3.77.17** or later.
### Workarounds
- No specific workarounds have been provided. Immediate patching is the primary recommended mitigation strategy to address these critical flaws.
## Detection
- **Indicators of Compromise:** Monitor system logs for unusual administrative activity or unauthorized API calls to the Identity Exposure instance.
- **Detection methods and tools:** Use Tenable’s own vulnerability scanning tools (Nessus/Tenable.io) to identify outdated versions of the Identity Exposure software within the environment.
## References
- **Vendor advisory:** hxxps[://]www[.]tenable[.]com/security/tns-2026-11
- **Tenable Security Center:** hxxps[://]www[.]tenable[.]com/security
- **Cyber Centre Advisory:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/tenable-security-advisory-av26-354