CVE-2026-77106 Commvault CVE debrief

Who should care

Defenders responsible for Commvault Cloud installations, including Commserve, Webserver, Command Center, Media Agents, Clients, and HyperScale X, should assess exposure and prioritize upgrading to resolved maintenance releases.

Why it matters

CVE-2026-77106 is a HIGH severity vulnerability in Commvault Cloud, specifically affecting the Cvlaunchd component. The vulnerability is caused by a missing authorization issue that impacts command execution authorization. Defenders responsible for Commvault Cloud installations should assess exposure and prioritize upgrading to resolved maintenance releases.

• Verify Commvault Cloud installations for potential exposure to unauthorized command execution.
• Assess and prioritize upgrading Cvlaunchd and related components to resolved maintenance releases.
• Review and update inventory of Commvault installations to ensure comprehensive coverage.

Technical summary

CVE-2026-77106 is a HIGH severity vulnerability in Commvault Cloud, specifically affecting the Cvlaunchd component. The vulnerability is caused by a missing authorization issue that impacts command execution authorization. The vulnerability has a CVSS score of 7.7. Defenders responsible for Commvault Cloud installations should assess exposure and prioritize upgrading to resolved maintenance releases. The official CVE Program record and NIST NVD detail page offer source-provided CVE metadata and vulnerability assessments.

Defensive priority

Upgrade Commvault installations to resolved maintenance release

Recommended defensive actions

• Upgrade Commvault installations, including Commserve, Webserver, Command Center, Media Agents, Clients, and HyperScale X, to resolved maintenance release.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Evidence notes

The CVE record and NVD entry provide details on the missing authorization issue affecting command execution authorization in Cvlaunchd, part of Commvault Cloud. The vulnerability has a CVSS score of 7.7 and is considered HIGH severity. Software customers are advised to upgrade to resolved maintenance releases. The official CVE Program record and NIST NVD detail page offer source-provided CVE metadata and vulnerability assessments.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.