CommServe Denial of Service
Priority MEDIUM 44CWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
CommServe contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00458 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Commvault | Commvault Cloud | 11.46.0 – 11.46.19; 11.44.0 – 11.44.19; 11.40.0 – 11.40.71; 11.36.0 – 11.36.122 | — | No fix listed | CNA |
- Commvault Cloud VendorCommvault Affected 11.46.0 – 11.46.19; 11.44.0 – 11.44.19; 11.40.0 – 11.40.71; 11.36.0 – 11.36.122 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:* | 11.36.0 to before 11.36.123; 11.40.0 to before 11.40.72; 11.44.0 to before 11.44.20; 11.46.0 to before 11.46.20 | Vulnerable | Commvault |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:* Versions 11.36.0 to before 11.36.123; 11.40.0 to before 11.40.72; 11.44.0 to before 11.44.20; 11.46.0 to before 11.46.20 Vulnerable ·Commvault
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77102
- 2026-10-03 Alias added: GHSA-q6mj-3xwf-wjgv
References
More Commvault vulnerabilities
- TI-2025-24197 Commvault Command Center Innovation Release <= 11.38.25 Unathenticated Install Package Path Traversal KEVCVSS 4.0CRITICAL 9.3
- TI-2025-03473 Commvault Web Server unspecified vulnerability KEVCVSS 4.0HIGH 8.7
- TI-2017-13252 A Command Injection issue was discovered in ContentStore/Base/CVDataPipe.dll in Commvault… CVSS 3.0CRITICAL 9.8
- TI-2025-35673 Path traversal in Commvault CommCell CVSS 4.0HIGH 8.7
- TI-2025-35674 Argument Injection Vulnerability in CommServe CVSS 4.0MEDIUM 6.9
- TI-2026-53842 Command Center API Authentication Bypass CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-77102 · CVE Program
- CVE-2026-77102 · NVD
- FIRST EPSS
- GHSA-q6mj-3xwf-wjgv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences