Commvault is widely used enterprise backup software; an auth bypass enabling command execution across CommServe and agents can disrupt backups and operations.
CVE-2026-13738
Authorization bypass in Commvault CommServe allowing unauthorized command execution.
Is CVE-2026-13738 being exploited?
Not confirmed. CVE-2026-13738 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 0.63% probability of exploitation in the next 30 days.
How severe is CVE-2026-13738?
CVE-2026-13738 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-2026-13738?
Yes. A fix has been recorded for CVE-2026-13738. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13738 affect?
CVE-2026-13738 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-2026-13738?
Apply vendor maintenance release to all Commvault components immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Auth bypass permits unauthorized command execution on CommServe and agents, enabling data exfiltration, backup tampering, and privilege escalation.
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.