Affects Commvault backup infrastructure; unauthorized command execution can disrupt backups, enable data theft or ransomware across enterprises.
CVE-2026-13737
Allowlist bypass in Commvault enabling unauthorized command execution.
Is CVE-2026-13737 being exploited?
Not confirmed. CVE-2026-13737 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-13737?
CVE-2026-13737 is rated Critical with a CVSS score of 9.2. 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-2026-13737?
Yes. A fix has been recorded for CVE-2026-13737. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13737 affect?
CVE-2026-13737 affects CommServe, Webserver, Command Center, Media Agents, and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-13737?
Apply Commvault maintenance release immediately; isolate and monitor affected servers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Allowlist bypass permits unauthorized command execution on CommServe and related components, enabling RCE, data theft, backup disruption, or ransomware facilitation.
Immediate action required
- affected>= 11.46.0 and <= 11.46.9
- affected>= 11.44.0 and <= 11.44.10
- affected>= 11.40.0 and <= 11.40.62
- affected>= 11.36.0 and <= 11.36.113
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.