Auth bypass in widely-deployed Commvault Private Metrics Server can allow unauthenticated metric uploads and disrupt service availability across enterprises; high CVSS and vendor fix justify broad IT notice.
CVE-2026-77097
Auth bypass in Private Metrics Server allows unauthenticated metric uploads and service disruption.
Is CVE-2026-77097 being exploited?
Not confirmed. CVE-2026-77097 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-77097?
CVE-2026-77097 is rated High with a CVSS score of 8.8. 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-2026-77097?
Yes. A fix has been recorded for CVE-2026-77097. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-77097 affect?
CVE-2026-77097 affects Commvault Private Metrics Server, Private Metrics Server component. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-77097?
Install vendor maintenance release for Private Metrics Server immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authentication bypass lets unauthenticated actors upload arbitrary metrics and impact service availability (potential DoS, telemetry tampering).
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.