CVE-2026-77089
CVE-2026-77089 is a critical-severity vulnerability in Commvault with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-290.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 9.3
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-290
- Affected product: Commvault
- Published:
- Last modified:
Description
Command Center API contained an authentication bypass issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update Command Center.
Frequently asked questions
- What is CVE-2026-77089?
- Command Center API contained an authentication bypass issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update Command Center.
- How severe is CVE-2026-77089?
- CVE-2026-77089 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-77089 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-77089?
- CVE-2026-77089 affects Commvault. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-77089?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-77089 published?
- CVE-2026-77089 was published on 2026-09-08 and last updated on 2026-09-11.
References
Affected products (1)
- cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*
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