CVE-2026-77100
High
Description
MediaAgent contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.
SeverityHigh
CVSS8.7
Exploit probability—
ProductCommvault Cloud
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-122CWE-122
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Commvault Commvault Cloud | 11.46.0 ≤ v ≤ 11.46.29, 11.44.0 ≤ v ≤ 11.44.24, 11.40.0 ≤ v ≤ 11.40.77, 11.36.0 ≤ v ≤ 11.36.126 | — |
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