CVE-2026-5176 Details
Description
A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. Affected is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument provided results in command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.
A command injection vulnerability has been identified in the Totolink A3300R router, specifically in version 17.0.0cu.557_b20221024. The issue arises in the web service 'shttpd', within the 'setSyslogCfg' function of the '/cgi-bin/cstecgi.cgi' file. This vulnerability allows remote, unauthenticated attackers to execute arbitrary operating system commands on the device by sending a crafted HTTP request. The root cause is the improper handling of user input, which enables the injection of malicious commands that are executed via the 'execv()' system call.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 31, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_rtLogServer_cmd_inject | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/779145 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354244 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354244/cti | [email protected] | Permissions RequiredVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
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 29, 2026 | Data Remediation | [email protected] |
| Apr 6, 2026 | Initial Analysis | [email protected] |
| Mar 31, 2026 | New CVE Received | [email protected] |