CVE-2026-77093 CvFWD Denial of Service
An integer overflow in CvFWD allows attackers to cause a denial of service, 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-2026-77093?
CVE-2026-77093 is a high-severity 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 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
Weakness: CWE-190
Which versions are affected by CVE-2026-77093?
How do I fix CVE-2026-77093?
No fix has been published for CVE-2026-77093 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-77093 being exploited?
There is no known exploitation of CVE-2026-77093 in the wild and no public exploit code.
Sources
Also known as GHSA-fr5f-qvc7-98xj.