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Vulnerability record · CVE-2016-6669 · published 22 September 2016

CVE-2016-6669: Huawei usg2100 firmware memory buffer overflow vulnerability

Huawei · Usg2100 Firmware

Buffer overflow in the Authentication, Authorization and Accounting (AAA) module in Huawei USG2100, USG2200, USG5100, and USG5500 unified security gateways with software before V300R001C10SPC600 allows remote authenticated RADIUS servers to execute arbitrary code by sending a crafted EAP packet.

7.5 CVSS 3.0 High EPSS 3.3% · top 11.6% CWE-119 · Memory buffer overflow
7.5CVSS 3.0 base score, v2 7.1
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Buffer overflow in the Authentication, Authorization and Accounting (AAA) module in Huawei USG2100, USG2200, USG5100, and USG5500 unified security gateways with software before V300R001C10SPC600 allows remote authenticated RADIUS servers to execute arbitrary code by sending a crafted EAP packet.

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160810-01-usg-en VDB Entry
http://www.securityfocus.com/bid/92441
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160810-01-usg-en VDB Entry
http://www.securityfocus.com/bid/92441

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-6669), CISA KEV, FIRST EPSS (scores of 2026-10-17). This page is refreshed as NVD updates the record.