RCE in Edimax Ew-7438rpn
CVE-2026-9424
A weakness has been identified in Edimax EW-7438RPn 1.31. The affected element is the function formWlanMP of the file /goform/formWlanMP of the component Content-Type Handler. Executing a manipulation of the argument ateFunc/ateGain/ateTxCount/ateChan/ateRate/ateMacID/e2pTxPower1/e2pTxPower2/e2pTxPower3/e2pTxPower4/e2pTxPower5/e2pTxPower6/e2pTxPower7/e2pTx2Power1/e2pTx2Power2/e2pTx2Power3/e2pTx2Power4/e2pTx2Power5/e2pTx2Power6/e2pTx2Power7/ateTxFreqOffset/ateMode/ateBW/ateAntenna/e2pTxFreqOffset/e2pTxPwDeltaB/e2pTxPwDeltaG/e2pTxPwDeltaMix/e2pTxPwDeltaN/readE2P can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.024 (83.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.024 · change: +0.012
Affected products
- Edimax Ew-7438rpn — versions 1.31
Weakness classification (CWE)
References
- vuldb.com/vuln/365405 (technical-description, vdb-entry)
- vuldb.com/vuln/365405/cti (signature, permissions-required)
- vuldb.com/submit/813891 (third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_7/7.md (exploit)
Frequently asked questions
- What is CVE-2026-9424?
- CVE-2026-9424 is a medium-severity vulnerability in Edimax Ew-7438rpn, classified under Command Injection. CVSS score: 6.3/10. Published 2026-05-25.
- How severe is CVE-2026-9424?
- Medium severity. CVSS v3 base score is 6.3 out of 10.