CVE-2026-77103

8.7 highEPSS 0.5%

High (8.7) in commvault commvault. EPSS 0.5% chance of exploitation in the next 30 days.

CommServe contained an authentication bypass issue affecting access authorization and information disclosure. Software customers upgrade to resolved maintenance release. Update CommServe.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-288
Published: 2026-09-08
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

Affected

commvault:commvault

References

https://documentation.commvault.com/securityadvisories/CV_2026_08_5.html

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