CVE-2026-77099 CVFS Command Execution
An input validation flaw in Commvault CVFS allows attackers to execute arbitrary commands, requiring an upgrade to the resolved maintenance release.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77099?
CVE-2026-77099 is a critical command injection vulnerability in Commvault Cloud, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CVFS contained an input validation issue affecting command execution. Software customers upgrade to resolved maintenance release. Update CVFS.
Weakness: CWE-78
Which versions are affected by CVE-2026-77099?
How do I fix CVE-2026-77099?
No fix has been published for CVE-2026-77099 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-77099 being exploited?
There is no known exploitation of CVE-2026-77099 in the wild and no public exploit code.
Sources
Also known as GHSA-96p4-48xx-h4f4.