High severity · published May 1, 2026
CVE-2026-7548
Totolink NR1800X cstecgi.cgi sub_41A68C command injection
8.8
CVSS
1.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NR
NR1800X · Totolink
9.1.0u.6279_B20210910 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7548
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7548
github.com
https://github.com/newym/cve/blob/main/totolink%20nr1800x%20command%20injection.md
vuldb.com
https://vuldb.com/submit/804417
vuldb.com
https://vuldb.com/vuln/360358
vuldb.com
https://vuldb.com/vuln/360358/cti
www.totolink.net
https://www.totolink.net/
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