Free and open · new CVEs checked every 20 minutesStatusRSSOpen dataContact

CVE-2026-13737: CommServe contained an allowlist bypass vulnerability affecting command execution authorization

50
This month
CRITICAL 9.8REMOTEUPGRADE

CVE-2026-13737 is a critical-severity flaw (CVSS 9.8) affecting commvault. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 56%)
CISA exploited listNo
WeaknessCWE-863
Published2026-08-11
Last modified2026-10-23
Publisher (CNA): Commvault · Vendor: commvault

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

commvault commvault UPGRADE
Affected: >= 11.36.0 and < 11.36.114 · >= 11.40.0 and < 11.40.63 · >= 11.44.0 and < 11.44.11 · >= 11.46.0 and < 11.46.10
Fixed in: 11.36.114, 11.40.63, 11.44.11, 11.46.10
Safe to downgrade to: a release before 11.36.0
1. Check installed version
apt-cache policy commvault || rpm -q commvault || commvault --version
2. UPGRADE to 11.36.114 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade commvault
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade commvault
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 11.36.0 (Debian / Ubuntu)
apt-cache madison commvault sudo apt install commvault=<VERSION_BEFORE_11.36.0> sudo apt-mark hold commvault
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list commvault sudo dnf downgrade commvault-<VERSION_BEFORE_11.36.0> sudo dnf versionlock add commvault
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Fedora 46 · diffoscope · FIXED · 335-1.fc46 · FEDORA-2026-e4c4cc0856 · source
sudo dnf upgrade --advisory=FEDORA-2026-e4c4cc0856
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-13737?

commvault: upgrade to 11.36.114, 11.40.63, 11.44.11, 11.46.10. Exact commands for each OS are on this page.

Is CVE-2026-13737 being exploited?

CVE-2026-13737 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-13737 affect?

CVE-2026-13737 affects commvault. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2026-13737?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Commvault vulnerabilities

Related CVEs

References

← Back to latest CVEs