CVE-2026-31169 Details
Description
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the week parameter to /cgi-bin/cstecgi.cgi.
A command injection vulnerability has been identified in ToToLink A3300R firmware version 17.0.0cu.557_B20221024. The issue arises in the cgi-bin/cstecgi.cgi script, where the 'week' parameter can be manipulated to execute arbitrary commands. This vulnerability exploits the sub_414614 function, which retrieves the 'week' value from the request and passes it to the Uci_Set_Str function. The Uci_Set_Str function concatenates the input using sprintf and sends it to CsteSystem for execution. The CsteSystem function then wraps the command and executes it via execv, allowing for arbitrary command execution on the device.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-week-cmd-injection | CISA-ADP | ExploitThird Party Advisory |
| https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-week-cmd-injection | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| totolink a3300r firmware | 17.0.0cu.557_b20221024 |
CPE
Remediation
| |
| totolink a3300r | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 23, 2026 | New CVE Received | [email protected] |
| Apr 23, 2026 | CVE Modified | CISA-ADP |