High severity · published Oct 13, 2026
CVE-2026-77100
MediaAgent Denial of Service
8.7
CVSS
0.3%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Commvault Cloud · Commvault
11.46.0 through 11.46.29; 11.44.0 through 11.44.24; 11.40.0 through 11.40.77; 11.36.0 through 11.36.126 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77100
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77100
documentation.commvault.com
https://documentation.commvault.com/securityadvisories/CV_2026_10_6.html
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