Network messaging layer decompression resource exhaustion

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97334
StatePUBLISHED
AssignerCommvault
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-13 15:17:52 UTC
Updated2026-10-13 15:17:52 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from 050066fd-a2f9-4f32-ab5d-4c53f48bc333

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

Problem Types: CWE-409 | CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) | CWE-409 CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

VersionSourceTypeScoreSeverityVector
4.0050066fd-a2f9-4f32-ab5d-4c53f48bc333Secondary8.7HIGHCVSS: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/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Commvault Commvault Cloud affected 11.46.0 11.46.29 custom Windows, Linux
CNA Commvault Commvault Cloud affected 11.44.0 11.44.24 custom Windows, Linux
CNA Commvault Commvault Cloud affected 11.40.0 11.40.77 custom Windows, Linux
CNA Commvault Commvault Cloud affected 11.36.0 11.36.126 custom Windows, Linux

References

ReferenceSourceLinkTags
documentation.commvault.com/securityadvisories/CV_2026_10_3.html 050066fd-a2f9-4f32-ab5d-4c53f48bc333 documentation.commvault.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Michael Tucker and Tan Chew Keong from the XOR team at JPMorgan Chase. (en)

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