Medium severity · published Apr 23, 2026
CVE-2026-31172
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the user parameter to /cgi-bin/cstecgi.cgi
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the user parameter to /cgi-bin/cstecgi.cgi.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
A3300r Firmware · Totolink
17.0.0cu.557_b20221024 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31172
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31172
Exploit
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-user-cmd-injection
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