Affects widely used enterprise backup management (Commvault Command Center). An auth bypass enabling admin takeover can disrupt backups, recovery, and business operations, warranting broad IT attention.
CVE-2026-77089
Authentication bypass in Commvault Command Center enabling privilege escalation
Is CVE-2026-77089 being exploited?
Not confirmed. CVE-2026-77089 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-77089?
CVE-2026-77089 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-77089?
Yes. A fix has been recorded for CVE-2026-77089. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-77089 affect?
CVE-2026-77089 affects Commvault Command Center. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-77089?
Install Command Center maintenance release now; restrict admin access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authentication bypass allows attackers to elevate to admin, control backup/restore, alter configs and compromise backup integrity.
Immediate action required
- affected>= 11.46.0 and <= 11.46.19
- affected>= 11.44.0 and <= 11.44.19
- affected>= 11.40.0 and <= 11.40.71
- affected>= 11.36.0 and <= 11.36.122
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.