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CVE-2026-77093— CvFWD Denial of Service

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.

CvFWD 中存在一个整数溢出漏洞，影响了服务的可用性。软件客户需升级到已修复该问题的维护版本。请更新所有 Commvault 组件的安装，包括 CommServe、Webserver、Command Center、MediaAgent、Client 以及 HyperScale。

CVSS 7.1 · High EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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-2026-77093

Vulnerability Information
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Vulnerability Title
CvFWD Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
CvFWD contained an integer overflow affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe, Webserver, Command Center, MediaAgents, Clients and HyperScale
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-2026-77093

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III. Intelligence Information for CVE-2026-77093

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Vendor Advisories for CVE-2026-77093 (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-2026-97334 8.7 HIGH Network messaging layer decompression resource exhaustion
CVE-2026-77096 7.7 HIGH CVFS Missing Authentication
CVE-2026-77094 7.1 HIGH CvFWD Out-of-Bounds Write
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-2026-77093

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