CVE-2026-77093: CWE-190: Integer Overflow or Wraparound in Commvault Commvault Cloud
Description
CVE-2026-77093 is an integer overflow vulnerability in Commvault Cloud's CvFWD component that affects service availability. It requires updating all Commvault installations including CommServe, Webserver, Command Center, MediaAgents, Clients, and HyperScale to a resolved maintenance release. The vulnerability has a high severity score of 7.1 and impacts multiple version ranges prior to specific fixed releases.
CVSS v4.0
Score 7.1high
Affected software
Commvault
Commvault Cloud
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow or wraparound (CWE-190) in the CvFWD component of Commvault Cloud, which can impact service availability. The issue affects multiple versions of Commvault Cloud software, specifically versions >=11.46.0 and <11.46.30, >=11.44.0 and <11.44.25, >=11.40.0 and <11.40.78, and >=11.36.0 and <11.36.127. Customers are advised to upgrade to the resolved maintenance releases to mitigate the risk.
Potential Impact
The integer overflow vulnerability can cause service availability issues in affected Commvault Cloud components. There are no known exploits in the wild at this time. The vulnerability requires privileged access (PR:L) but no user interaction, and it has a high impact on availability (VA:H).
Mitigation Recommendations
A fix is available through resolved maintenance releases. Customers should upgrade all Commvault installations, including CommServe, Webserver, Command Center, MediaAgents, Clients, and HyperScale, to the fixed versions. Patch status is confirmed by the vendor advisory indicating resolved maintenance releases.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Commvault
- Date Reserved
- 2026-08-20T10:56:58.070Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace415e2cdf04f656747db8
Added to database: 10/13/2026, 14:34:06 UTC
Last enriched: 10/13/2026, 14:48:58 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 8
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