How severe is CVE-2026-97334?

CVE-2026-97334 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-97334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-97334?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-97334 published?

CVE-2026-97334 was published on 2026-10-13 and last updated on 2026-10-14.

CVE-2026-97334

CVE-2026-97334 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-409.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-409
Published: 2026-10-13
Last modified: 2026-10-14

Description

The network messaging layer contained improper handling of highly compressed data affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale.

Frequently asked questions

What is CVE-2026-97334?: The network messaging layer contained improper handling of highly compressed data affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale.
How severe is CVE-2026-97334?: CVE-2026-97334 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-97334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-97334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-97334 published?: CVE-2026-97334 was published on 2026-10-13 and last updated on 2026-10-14.

References

https://documentation.commvault.com/securityadvisories/CV_2026_10_3.html

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