← Vulnerability feed

Vulnerability record · CVE-2021-22320 · published 22 March 2021

CVE-2021-22320: Huawei ips module firmware vulnerability

Huawei · Ips Module Firmware

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly. Attackers can exploit this vulnerability by sending malicious messages to an affected module. This can lead to denial of service. Affected product include some versions of IPS Module, NGFW Module, NIP6600, NIP6800, Secospace USG6300, Secospace USG6500 and Secospace USG6600.

7.5 CVSS 3.1 High EPSS 0.75% · top 45.9%
7.5CVSS 3.1 base score, v2 5.0
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly. Attackers can exploit this vulnerability by sending malicious messages to an affected module. This can lead to denial of service. Affected product include some versions of IPS Module, NGFW Module, NIP6600, NIP6800, Secospace USG6300, Secospace USG6500 and Secospace USG6600.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

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

References

LinkTags
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-03-dos-en Vendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-03-dos-en Vendor Advisory

Track CVE-2021-22320 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2020-9099Huawei ips module firmware improper authentication vulnerabilityHuawei products IPS Module; NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6300; Secospace USG6500; Secospace USG6600; USG9500 with versions of…EPSS 0.88%9.8CVE-2016-4576Huawei nip6300 firmware memory buffer overflow vulnerabilityBuffer overflow in the Application Specific Packet Filtering (ASPF) functionality in the Huawei IPS Module, NGFW Module, NIP6300, NIP6600, Secospace …EPSS 2.4%8.6CVE-2019-5254Huawei ap2000 firmware out-of-bounds read vulnerabilityCertain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secosp…EPSS 0.75%7.5CVE-2021-37129Huawei ips module firmware out-of-bounds write vulnerabilityThere is an out of bounds write vulnerability in some Huawei products. The vulnerability is caused by a function of a module that does not properly v…EPSS 0.68%7.5CVE-2020-9213Huawei ngfw module firmware vulnerabilityThere is a denial of service vulnerability in some huawei products. In specific scenarios, due to the improper handling of the packets, an attacker m…EPSS 0.75%7.5CVE-2020-1847Huawei nip6300 firmware vulnerabilityThere is a denial of service vulnerability in some Huawei products. There is no protection against the attack scenario of specific protocol. A remote…EPSS 0.75%7.5CVE-2019-19416Huawei ar120-s firmware improper input validation vulnerabilityThe SIP module of some Huawei products have a denial of service (DoS) vulnerability. A remote attacker could exploit these three vulnerabilities by s…EPSS 0.88%7.5CVE-2019-19417Huawei ar120-s firmware improper input validation vulnerabilityThe SIP module of some Huawei products have a denial of service (DoS) vulnerability. A remote attacker could exploit these three vulnerabilities by s…EPSS 0.88%

Source: NIST National Vulnerability Database (record CVE-2021-22320), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.