Vulnerability · Published Mar 31, 2026 · Assigned by VulDB

CVE-2026-5177Totolink A3300R cstecgi.cgi setWiFiBasicCfg command injection

Medium 6.3

In plain English

A medium-severity command injection in A3300R from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.7% (higher than 86% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)2.7%top 13.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. Affected by this vulnerability is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument rxRate can lead to command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Totolink	A3300R	17.0.0cu.557_b20221024

Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-354245 | Totolink A3300R cstecgi.cgi setWiFiBasicCfg command injection vdb-entry, technical-description
VDB-354245 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #779146 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection third-party-advisory
https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_rxRate_cmd_inject exploit
https://www.totolink.net/ product