CommVault SystemsCVE-2026-77101
Commvault Cloud: stack buffer overflow
High8.7CVE-2026-77101 · Published Sep 8, 2026 · updated Sep 9, 2026
CommServe contained a stack-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Commvault Cloud Product | >= 11.46.0, <= 11.46.19 | No fix yet |
| >= 11.44.0, <= 11.44.19 | No fix yet | |
| >= 11.40.0, <= 11.40.71 | No fix yet | |
| >= 11.36.0, <= 11.36.122 | No fix yet |
Details and references
- CVSS 4.0
- 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
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-121
More CommVault Systems advisories
All CommVault Systems| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 8 | Commvault Cloud: authentication bypass | High8.7 | No fix yet |
| Sep 8 | Commvault Cloud: path traversal | High8.3 | No fix yet |
| Sep 8 | Commvault Cloud: improper signature check | High8.7 | No fix yet |
| Sep 8 | Commvault Cloud: missing authorization | High7.7 | No fix yet |
| Sep 8 | Commvault Cloud: authentication bypass | Critical9.3 | No fix yet |
| Sep 8 | Commvault Cloud: path traversal | High8.5 | No fix yet |