How severe is CVE-2026-13737?

CVE-2026-13737 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-13737 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-13737?

CVE-2026-13737 affects Commvault. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-13737?

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

When was CVE-2026-13737 published?

CVE-2026-13737 was published on 2026-08-11 and last updated on 2026-09-09.

CVE-2026-13737

CVE-2026-13737 is a critical-severity vulnerability in Commvault with a CVSS 3.x base score of 9.8. 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-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.2
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Commvault
Published: 2026-08-11
Last modified: 2026-09-09

Description

CommServe contained an allowlist bypass vulnerability affecting command execution authorization. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including Commserve, Webserver, Command Center, Media Agents, Clients and HyperScale X.

Frequently asked questions

What is CVE-2026-13737?: CommServe contained an allowlist bypass vulnerability affecting command execution authorization. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including Commserve, Webserver, Command Center, Media Agents, Clients and HyperScale X.
How severe is CVE-2026-13737?: CVE-2026-13737 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-13737 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-13737?: CVE-2026-13737 affects Commvault. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-13737?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-13737 published?: CVE-2026-13737 was published on 2026-08-11 and last updated on 2026-09-09.

References

https://documentation.commvault.com/securityadvisories/CV_2026_07_8.html

Affected products (1)

cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*

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