CVE-2026-44926 Overview
CVE-2026-44926 is an access control vulnerability affecting InfoScale CmdServer versions before 7.4.2. The flaw stems from improper enforcement of access restrictions [CWE-284] within the Command Server component. Authenticated attackers on the network can abuse the weakness to escalate privileges and impact confidentiality, integrity, and availability of the affected system.
The issue is documented by Veritas in an InfoScale Security Bulletin and an associated support document. No public proof-of-concept exploit has been disclosed at the time of writing, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Critical Impact
An authenticated network attacker can bypass access control in InfoScale CmdServer, leading to full compromise of system confidentiality, integrity, and availability.
Affected Products
- Veritas InfoScale Command Server (CmdServer) versions prior to 7.4.2
- Deployments relying on InfoScale CmdServer for cluster command execution
- Environments running unpatched InfoScale storage and availability components
Discovery Timeline
- 2026-05-20 - CVE-2026-44926 published to the National Vulnerability Database
- 2026-05-20 - NVD record last modified
Technical Details for CVE-2026-44926
Vulnerability Analysis
The vulnerability resides in InfoScale CmdServer, the network-facing command processing service used by InfoScale clusters. CmdServer mishandles access control checks when processing requests from authenticated low-privilege users. As a result, requests that should be rejected or restricted are processed with elevated trust.
Exploitation requires network reachability to the CmdServer service and a low-privilege authenticated session. No user interaction is required. Successful exploitation impacts the confidentiality, integrity, and availability of the host running CmdServer, which typically participates in storage and cluster management operations.
Because CmdServer commonly executes privileged cluster operations, abuse of the access control gap can extend into cluster-wide configuration changes, data exposure, or service disruption across nodes. The weakness is classified under [CWE-284] Improper Access Control.
Root Cause
The root cause is improper validation of caller authorization within CmdServer request handling. Authenticated callers can reach code paths intended only for higher-privileged roles. Veritas addressed the issue in InfoScale 7.4.2 by tightening the access control logic.
Attack Vector
The attack vector is network-based and requires low privileges. An attacker with an authenticated session sends crafted CmdServer requests to invoke privileged operations. See the InfoScale Security Bulletin CVE-2026-44926 for vendor-supplied technical context.
// No public proof-of-concept is available.
// Refer to the Veritas advisory for technical details.
Detection Methods for CVE-2026-44926
Indicators of Compromise
- Unexpected CmdServer requests from low-privilege accounts invoking administrative cluster operations
- Unusual configuration changes to InfoScale cluster resources outside change windows
- CmdServer log entries showing privileged actions performed by accounts not assigned administrative roles
Detection Strategies
- Audit CmdServer access logs for command executions that do not match the role of the authenticated principal
- Compare cluster configuration baselines against current state to identify unauthorized modifications
- Alert on CmdServer connections from hosts or subnets not designated for cluster administration
Monitoring Recommendations
- Forward CmdServer logs to a centralized logging or SIEM platform for correlation with identity events
- Monitor for spikes in CmdServer command volume per user, particularly outside business hours
- Track authentication events for InfoScale service accounts and flag anomalous source addresses
How to Mitigate CVE-2026-44926
Immediate Actions Required
- Upgrade InfoScale CmdServer to version 7.4.2 or later as directed by the vendor advisory
- Restrict network access to the CmdServer port to trusted administrative hosts only
- Review and rotate credentials for accounts authorized to interact with CmdServer
Patch Information
Veritas resolved the access control flaw in InfoScale 7.4.2. Patch details and upgrade guidance are available in the InfoScale Security Bulletin CVE-2026-44926 and in Veritas Support Document #109864724.
Workarounds
- Apply host-based firewall rules to limit CmdServer connectivity to authorized management subnets
- Enforce least privilege on accounts that can authenticate to CmdServer until the patch is deployed
- Increase audit logging on CmdServer to capture command execution context for post-event review
# Example: restrict CmdServer access at the host firewall (Linux iptables)
iptables -A INPUT -p tcp --dport 14150 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 14150 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
