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VulnerabilityPublished

CVE-2026-7720: Totolink WA300 · Command Injection

Affects Totolink WA300Source CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
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:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
TotolinkWA300Affected
  • =5.2cu.7112_B20190227
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.

References

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