CVE-2026-77100

HighCVSS 8.7/10Last modified Oct 14, 2026

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.

Metrics

CVSS 4.0 8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Commvault	Commvault Cloud	>= 11.46.0, <= 11.46.29; >= 11.44.0, <= 11.44.24; >= 11.40.0, <= 11.40.77; >= 11.36.0, <= 11.36.126

References

https://documentation.commvault.com/securityadvisories/CV_2026_10_6.html

Timeline

Published: Oct 13, 2026
Last modified: Oct 14, 2026
NVD status: Awaiting Analysis

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