CVE-2026-97334

Network messaging layer decompression resource exhaustion

State: Published
Severity: 8.7 High
Published: Oct 13, 2026
Updated: Oct 13, 2026
Reserved: Sep 24, 2026

Description

The network messaging layer contained improper handling of highly compressed data affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	Commvault

Weaknesses

CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

Affected Products

Product	Versions
Commvault CloudCommvault	11.46.0 through 11.46.29Affectedfrom 11.46.30Not affected 11.44.0 through 11.44.24Affectedfrom 11.44.25Not affected 11.40.0 through 11.40.77Affectedfrom 11.40.78Not affected 11.36.0 through 11.36.126Affectedfrom 11.36.127Not affected

References

https://documentation.commvault.com/securityadvisories/CV_2026_10_3.html

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