Integer Overflow Vulnerability in Commvault's Data Protection Software
CVE-2026-77093

7.1HIGH

Key Information:

Vendor

Commvault

Status
Commvault Cloud
Vendor
CVE Published:
13 October 2026

What is CVE-2026-77093?

An integer overflow vulnerability has been identified in Commvault's data protection software, which could impact service availability for users. The vulnerability affects multiple components, including CommServe, Webserver, Command Center, MediaAgents, Clients, and HyperScale. Users are advised to upgrade to the latest resolved maintenance release to mitigate potential risks and ensure the continued security of their systems. For more details, visit the Commvault security advisory.

Affected Version(s)

Commvault Cloud Windows 11.46.0 <= 11.46.29

Commvault Cloud Windows 11.44.0 <= 11.44.24

Commvault Cloud Windows 11.40.0 <= 11.40.77

References

https://documentation.commvault.com/securityadvisories/CV...

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Michael Tucker and Tan Chew Keong from the XOR team at JPMorgan Chase.
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