CVE-2026-4497 Details
Description
A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. Affected by this issue is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
A critical vulnerability exists in the Totolink WA300 router, specifically in the firmware version 5.2cu.7112_B20190227. The issue arises in the 'recvUpgradeNewFw' function within the '/cgi-bin/cstecgi.cgi' file, where user-supplied input is not properly validated before being included in system commands. This oversight creates an OS command injection vulnerability, allowing for remote code execution with root privileges, without the need for authentication.
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 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hellonestor/killallbug/issues/1 | [email protected] | ExploitIssue Tracking |
| https://github.com/user-attachments/files/25790616/Unauthenticated.Remote.Code.Execution.in.TOTOLINK.WA300.via.Command.Injection.in.recvUpgradeNewFw.zip | [email protected] | Exploit |
| https://vuldb.com/?ctiid.352046 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.352046 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.773875 | [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-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| totolink wa300 firmware | 5.2cu.7112_b20190227 |
CPE
Remediation
| |
| totolink wa300 | 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 3, 2026 | Initial Analysis | [email protected] |
| Mar 20, 2026 | New CVE Received | [email protected] |