CVE-2026-32999

Severity: critical (CVSS 9.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-10-26
Weakness: CWE-94

Description

Insufficient character filtering in backup agent signing module on Comet Backup server allows authenticated tenant administrator to execute an arbitrary code on behalf of a privileged user on the affected server and connected devices.

Affected products

WebPros Comet Backup: before 26.4.3; before 26.5.0 — fixed in 26.4.3, 26.5.0

How to fix

Upgrade to a fixed version: WebPros Comet Backup 26.4.3, 26.5.0. Check the vendor advisory for mitigations.

References

https://support.cometbackup.com/hc/en-us/articles/40655100268439--CVE-2026-32999-RCE-on-Comet-Server-via-branding-configuration

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