CVE-2026-77100highCWE-122

CVE-2026-77100: high-severity vulnerability in Commvault Cloud

MediaAgent Denial of Service

Published

Follow this CVE+ Monitor Commvault Cloud

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.3%
MediaAgent contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update Commvault installation of MediaAgents and HyperScale.
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
Affected products
Commvault · Commvault Cloud
Related CVEs — Commvault Cloud

In the same product, most dangerous first.

CVE-2026-13738CRITICALImproper Authorization ValidationEPSS 0.7%CVE-2026-13737CRITICALCommand Restriction BypassEPSS 0.7%CVE-2026-77089CRITICALCommand Center API Authentication BypassEPSS 0.6%CVE-2026-77106HIGHCvlaunchd Code ExecutionEPSS 0.6%CVE-2026-77104HIGHCommServe Path TraversalEPSS 0.6%CVE-2026-77103HIGHCommServe Information DisclosureEPSS 0.5%