Critical severity · published Apr 27, 2026
CVE-2026-7136
Totolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection
9.8
CVSS
1.8%
EPSS
No
On KEV
Description
A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument wanIdx can lead to os command injection. The attack may 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)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A8
A8000RU · Totolink
7.1cu.643_b20200521 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7136
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7136
github.com
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_311/README.md
vuldb.com
https://vuldb.com/submit/801007
vuldb.com
https://vuldb.com/vuln/359735
vuldb.com
https://vuldb.com/vuln/359735/cti
www.totolink.net
https://www.totolink.net/
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