CVE-2026-5105 Details
Description
A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024. The affected element is the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument pptpPassThru results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.
A command injection vulnerability has been identified in the Totolink A3300R router, specifically in version 17.0.0cu.557_b20221024. The issue resides in the VPN parameter handler, within the function 'setVpnPassCfg' of the file '/cgi-bin/cstecgi.cgi'. This vulnerability allows remote attackers to execute arbitrary operating system commands by manipulating the 'pptpPassThru' parameter in a crafted request. The exploitation of this vulnerability could lead to a complete compromise of the affected device.
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 30, 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_pptpPassThru_cmd_inject | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/779143 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/vuln/354130 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354130/cti | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| 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] |
| Mar 30, 2026 | Initial Analysis | [email protected] |
| Mar 30, 2026 | New CVE Received | [email protected] |