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Vulnerability record · CVE-2026-7548 · published 1 May 2026

CVE-2026-7548: Injection vulnerability

A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.

7.4 CVSS 4.0 High EPSS 2.9% · top 13.6% CWE-74 · InjectionCWE-77 · Command injection Deferred
7.4CVSS 4.0 base score, v2 9.0
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/newym/cve/blob/main/totolink%20nr1800x%20command%20injection.md
https://vuldb.com/submit/804417
https://vuldb.com/vuln/360358
https://vuldb.com/vuln/360358/cti
https://www.totolink.net/

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Source: NIST National Vulnerability Database (record CVE-2026-7548), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.