CVE-2017-17215: Huawei HG532 router remote code execution via input validation flaw

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 18 September 2026. Confidence: medium.

high priorityRemote code execution with high CVSS and very high EPSS, though exploitation requires authentication and no KEV listing exists.

What it is

Huawei HG532 firmware (including customized versions) fails to properly validate input, allowing an authenticated attacker to send crafted packets to port 37215 and execute arbitrary code. The flaw is remotely reachable and carries a high CVSS score, making it a serious risk for exposed router management interfaces.

Impact

An attacker who can authenticate can run arbitrary code on the device, gaining full control of the router and potentially pivoting into the connected network.

Attack surface

Reached over the network via port 37215; the CVSS vector indicates low privileges are required (PR:L) and no user interaction (UI:N), so an attacker needs some level of authentication but no victim action.

Exploitation

Not listed in CISA KEV and no ransomware associations are documented, but EPSS is very high (0.78, 99.5th percentile), indicating elevated likelihood of exploitation activity.

What to do

• Apply the Huawei security notice SN-20171130-01 fix or upgrade to a non-vulnerable firmware version
• Restrict access to port 37215 to trusted management networks only
• Change default credentials and enforce strong authentication on the device
• Disable remote management or WAN-side access to the router interface where not required
• Monitor vendor advisories for updated firmware and reapply patches as released

Detection

• Monitor network traffic to port 37215 for anomalous or malformed packets
• Audit router authentication logs for unexpected logins followed by command execution
• Use IDS/IPS signatures targeting Huawei HG532 exploitation attempts
• Check device firmware versions against the vendor advisory to identify unpatched units

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.