High severity · published Sep 8, 2026
CVE-2026-77103
CommServe Information Disclosure
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
CommServe contained an authentication bypass issue affecting access authorization and information disclosure. Software customers upgrade to resolved maintenance release. Update CommServe.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% 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 11.46.19; 11.44.0 through 11.44.19; 11.40.0 through 11.40.71; 11.36.0 through 11.36.122 · source: vendor
CO
Commvault · Commvault
11.36.0 before 11.36.123; 11.40.0 before 11.40.72; 11.44.0 before 11.44.20; 11.46.0 before 11.46.20 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77103
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77103
Vendor Advisory
https://documentation.commvault.com/securityadvisories/CV_2026_08_5.html
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