Critical severity · published Apr 9, 2026
CVE-2026-5850
Totolink A7100RU CGI cstecgi.cgi setVpnPassCfg os command injection
9.8
CVSS
15.1%
EPSS
No
On KEV
Description
A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pptpPassThru leads to os command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might 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)15.1% · 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-2026-5850
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5850
github.com
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_156/README.md
vuldb.com
https://vuldb.com/submit/791266
vuldb.com
https://vuldb.com/vuln/356376
vuldb.com
https://vuldb.com/vuln/356376/cti
www.totolink.net
https://www.totolink.net/
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