Authenticated RCE on logo report upload in Guardian/CMC before 22.0.0

Last update: 2022-02-14

Advisory IDNN-2022:2-01
TopicAuthenticated RCE on logo report upload in Guardian/CMC before 22.0.0
ImpactCWE-20: Improper Input Validation
Issue date2022-02-14
AffectsGuardian and CMC with N2OS <v22.0.0
CVE Name(s)CVE-2022-0550
CVSS detailsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS Score6.3
CVE Risk LevelMedium
Risk Level for Nozomi customersLow


Improper Input Validation vulnerability in custom report logo upload in Nozomi Networks Guardian and CMC allows an authenticated attacker with admin or report manager roles to execute unattended commands on the appliance using web server user privileges.


Users with admin or report manager roles can upload a custom image to be used as logo in the header of the reports generated by Nozomi Networks Guardian and CMC. However, an improper validation is performed allowing the users to execute command remotly on the appliance, leveraging the privileges of the web server.

Affected Products

Guardian / CMC before v22.0.0.

Workarounds and Mitigations

Use internal firewall features to limit management interface access and review users allowed to manage reports.


Upgrade to v22.0.0.

Modification History

2022-02-14: Initial revision

Related Links

Mitre CVE entry


SECURA B.V. found this bug during a scheduled VAPT testing session.


Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.
More contact details on the PSIRT page.