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VulnerabilityPublished Updated

CVE-2026-30703: OS Command Injection

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 65% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Since no official patches are currently available, organizations should immediately restrict access to the web management interface of the WiFi Extender WDR201A by isolating the device management network segment and limiting management access to trusted IP addresses only. Disable remote management features if possible. Monitor network traffic for unusual command execution patterns or unexpected outbound connections originating from the device. Employ network segmentation to limit potential lateral movement if the device is compromised. Consider replacing the affected hardware with devices from vendors that provide timely security updates. Regularly check for firmware updates from the vendor and apply patches as soon as they become available. Additionally, implement intrusion detection systems capable of detecting command injection attempts targeting the adm.cgi endpoint.

Description

A command injection vulnerability exists in the web management interface of the WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02). The adm.cgi endpoint improperly sanitizes user-supplied input provided to a command-related parameter in the sysCMD functionality.

References

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