CVE-2026-77100

EUVD-2026-98762
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
CommvaultCNA
8.7 HIGH
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 22.9%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
commvaultcommvault
11.46.0 ≤
𝑥
≤ 11.46.29
CNA
commvaultcommvault
11.44.0 ≤
𝑥
≤ 11.44.24
CNA
commvaultcommvault
11.40.0 ≤
𝑥
≤ 11.40.77
CNA
commvaultcommvault
11.36.0 ≤
𝑥
≤ 11.36.126
CNA
Common Weakness Enumeration
References
https://documentation.commvault.com/securityadvisories/CV_2026_10_6.html