Huawei USG9520/USG9560/USG9580 V300R001C01 DHCP Request input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Huawei USG9520, USG9560 and USG9580 V300R001C01. It has been classified as problematic. Affected is an unknown code of the component DHCP Request Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

Huawei USG9520 V300R001C01, USG9560 V300R001C01, and USG9580 V300R001C01 allow unauthenticated attackers to send abnormal DHCP request packets to the affected products to trigger a DoS condition.

The bug was discovered 10/26/2016. The weakness was disclosed 04/02/2017 (Website). The advisory is available at This vulnerability is traded as CVE-2016-8796 since 10/18/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/24/2022).

The vulnerability was handled as a non-public zero-day exploit for at least 158 days. During that time the estimated underground price was around $5k-$25k.

It is possible to mitigate the weakness by firewalling .




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Input validation
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Firewall
Status: 🔍

0-Day Time: 🔍


10/18/2016 🔍
10/26/2016 +8 days 🔍
11/16/2016 +21 days 🔍
04/02/2017 +137 days 🔍
04/02/2017 +0 days 🔍
04/03/2017 +1 days 🔍
11/24/2022 +2061 days 🔍



Advisory: sa-20161116-01
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8796 (🔍)
SecurityFocus: 94405 - Multiple Huawei Products CVE-2016-8796 Denial of Service Vulnerability
OSVDB: - CVE-2016-8796 - Huawei - Multiple Products - Denial of Service Issue


Created: 04/03/2017 09:08 AM
Updated: 11/24/2022 03:29 PM
Changes: 04/03/2017 09:08 AM (64), 11/24/2022 03:29 PM (4)
Complete: 🔍


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