Critical severity · published Apr 9, 2026
CVE-2026-5854
Totolink A7100RU CGI cstecgi.cgi setWiFiEasyCfg os command injection
9.8
CVSS
16.6%
EPSS
No
On KEV
Description
A vulnerability was detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this issue is the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument merge results in os command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.
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)16.6% · higher than 97% 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-2026-5854
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5854
github.com
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_160/README.md
vuldb.com
https://vuldb.com/submit/791276
vuldb.com
https://vuldb.com/vuln/356380
vuldb.com
https://vuldb.com/vuln/356380/cti
www.totolink.net
https://www.totolink.net/
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