CVE-2026-91853: TOTOLINK X5000R Export Ovpn cstecgi.cgi exportOvpn os command injection

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-16
Weakness: CWE-77

Description

A vulnerability has been found in TOTOLINK X5000R 9.1.0cu.2089_B20211224. The impacted element is the function exportOvpn of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user of the component Export Ovpn Handler. The manipulation of the argument filetype leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

TOTOLINK X5000R: 9.1.0cu.2089_B20211224

References

https://github.com/awigwu76/TOTOLINK_X5000R/blob/main/2.md
https://vuldb.com/cve/CVE-2026-91853
https://vuldb.com/submit/933810
https://vuldb.com/vuln/404082
https://vuldb.com/vuln/404082/cti
https://www.totolink.net/

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