CVE-2026-7720: Totolink WA300 · Command Injection
Affects Totolink WA300Source CVE Database V5
Public exploit available · CVSS 5.3 Medium.
Data as of 31 Oct 2026, 08:20 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:PExploitation evidence
Disclosed: evidence found.
CVE published 4 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| TotolinkWA300 | Affected
| Fixed in– |
AI-suggested
Until a patch is available, restricting access to the device's management interface from untrusted networks may reduce exposure.
Description
CVE-2026-7720 is a command injection vulnerability in the Totolink WA300 router firmware version 5.2cu.7112_B20190227. The issue exists in the setLanguageCfg function of the /cgi-bin/cstecgi.cgi POST request handler, where manipulation of the langType argument allows remote attackers to execute arbitrary commands. The vulnerability has a medium severity with a CVSS 4.0 base score of 5.3. Although an exploit is publicly available, there are no known exploits observed in the wild. No official patch or remediation guidance has been provided by the vendor at this time.