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CVE-2026-97334— Network messaging layer decompression resource exhaustion

Quick assessment

Affected
Commvault Commvault Cloud
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

网络消息层存在对高度压缩数据的不当处理，影响服务可用性。软件客户可升级至已修复的维护版本。请更新所有 Commvault 安装组件，包括 CommServe 服务器、Web 服务器、Command Center、MediaAgent、客户端以及 HyperScale 平台。

CVSS 8.7 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 4

VendorProduct Version RangeStatus
Commvault Commvault Cloud 11.46.0≤ 11.46.29 affected
11.44.0≤ 11.44.24 affected
11.40.0≤ 11.40.77 affected
11.36.0≤ 11.36.126 affected
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I. Basic Information for CVE-2026-97334

Vulnerability Information
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Vulnerability Title
Network messaging layer decompression resource exhaustion
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Commvault Commvault Cloud 11.46.0 ~ 11.46.29 -

II. Public POCs for CVE-2026-97334

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III. Intelligence Information for CVE-2026-97334

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Vendor Advisories for CVE-2026-97334 (1)

Same Patch Batch · Commvault · 2026-10-13 · 10 CVEs total

CVE-2026-77099 9.3 CRITICAL CVFS Command Execution
CVE-2026-77100 8.7 HIGH MediaAgent Denial of Service
CVE-2026-77090 8.7 HIGH CVFS Information Disclosure
CVE-2026-77096 7.7 HIGH CVFS Missing Authentication
CVE-2026-77094 7.1 HIGH CvFWD Out-of-Bounds Write
CVE-2026-77093 7.1 HIGH CvFWD Denial of Service
CVE-2026-77095 7.1 HIGH CvFWD Null Pointer Dereference
CVE-2026-18228 7.1 HIGH Hyperscale Path Traversal
CVE-2026-97333 7.1 HIGH QAPI stack-based buffer overflow

IV. Related Vulnerabilities

Same product: Commvault Cloud
Same vendor: Commvault

V. Comments for CVE-2026-97334

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