Zero-Day Advisory

Fortinet Discovers Schneider Electric Smart-UPS SRT 5000 Authentication Bypass Vulnerability


Fortinet's FortiGuard Labs had discovered an Authentication Bypass vulnerability in Scheduled UPS Configuration of Schneider Electric Smart-UPS SRT 5000 .

Schneider Electric Smart-UPS is an intelligent and efficient network power protection from entry level to scaleable runtime.

The vulnerability is caused by insufficient authentication in Smart-UPS SRT 5000 Scheduled UPS configuration page. Upon successful exploitation, it allows an attacker with access to the IP and URL to bypass the login mechanism.


Users should apply the solution provided by Schneider Electric.

Additional Information

The vulnerability can be mitigated by enabling "Require Authentication Cookie" under "Configuration > Network > Web".

The vulnerability affected Schneider Electric Smart-UPS SRT 5000 Network Management Card 2 (NMC2) Policy Configuration version 6.9.6 and earlier.


Fortinet reported the vulnerability to Schneider Electric on 13th January, 2021.

Schneider Electric confirmed the vulnerability on 20th  January, 2021. 

Schneider Electric  released patch for the vulnerability on 9th November, 2021.


This vulnerability was discovered by Chua Wei Kiat of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.