CVE-2026-77094 CvFWD Out-of-Bounds Write
An out-of-bounds write in CvFWD allows attackers to disrupt service availability, requiring Commvault customers to upgrade to a resolved maintenance release.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77094?
CVE-2026-77094 is a high-severity memory corruption vulnerability in Commvault Cloud, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
CvFWD contained an out-of-bounds write affecting service availability. Software customers upgrade to resolved maintenance release. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe, Webserver, Command Center, MediaAgents, Clients and HyperScale.
Weakness: CWE-787
Which versions are affected by CVE-2026-77094?
How do I fix CVE-2026-77094?
No fix has been published for CVE-2026-77094 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-77094 being exploited?
There is no known exploitation of CVE-2026-77094 in the wild and no public exploit code.
Sources
Also known as GHSA-37r8-2wf6-93jv.