Login Request a demo
High severity · published Apr 6, 2026
CVE-2026-5691
Totolink A7100RU cstecgi.cgi setFirewallType os command injection
7.3
CVSS
1.3%
EPSS
No
On KEV
Description
A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setFirewallType of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% 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
Affected product
A7
A7100RU
Totolink
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5691
github.com
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_189/README.md
vuldb.com
https://vuldb.com/submit/792962
vuldb.com
https://vuldb.com/vuln/355518
vuldb.com
https://vuldb.com/vuln/355518/cti
www.totolink.net
https://www.totolink.net/
More from A7100RU
9.8
CVE-2026-6195
Totolink A7100RU CGI cstecgi.cgi setPasswordCfg os command injection
9.8
CVE-2026-6156
Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection
9.8
CVE-2026-6155
Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection
9.8
CVE-2026-6154
Totolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection
9.8
CVE-2026-6140
Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection