CVE-2026-5101 Details
Description
A vulnerability was identified in Totolink A3300R 17.0.0cu.557_b20221024. This affects the function setLanCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument lanIp leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.
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 Parameter Handler component, within the function setLanCfg of the file /cgi-bin/cstecgi.cgi. The vulnerability allows remote attackers to execute arbitrary operating system commands by manipulating the lanIp parameter in a crafted request.
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/Litengzheng/vul_db/blob/main/A3300R/vul_39/README.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/779128 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354126 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354126/cti | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS 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 29, 2026 | New CVE Received | [email protected] |