Critical severity · published Apr 10, 2026
CVE-2026-6027
Totolink A7100RU CGI cstecgi.cgi setUrlFilterRules os command injection
9.8
CVSS
2.5%
EPSS
No
On KEV
Description
A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument enable can lead to os command injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A7
A7100RU · Totolink
7.4cu.2313_b20191024 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6027
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6027
github.com
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_172/README.md
vuldb.com
https://vuldb.com/submit/792048
vuldb.com
https://vuldb.com/vuln/356603
vuldb.com
https://vuldb.com/vuln/356603/cti
www.totolink.net
https://www.totolink.net/
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