CVE-2021-37129

7.5 HIGH 0.7% exploit odds Fix listed

What it is

There 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 verify input parameter. Successful exploit could cause out of bounds write leading to a denial of service condition.Affected product versions include:IPS Module V500R005C00,V500R005C20;NGFW Module V500R005C00;NIP6600 V500R005C00,V500R005C20;S12700 V200R010C00SPC600,V200R011C10SPC500,V200R011C10SPC600,V200R013C00SPC500,V200R019C00SPC200,V200R019C00SPC500,V200R019C10SPC200,V200R020C00,V200R020C10;S1700 V200R010C00SPC600,V200R011C10SPC500,V200R011C10SPC600;S2700 V200R010C00SPC600,V200R011C10SPC500,V200R011C10SPC600;S5700 V200R010C00SPC600,V200R010C00SPC700,V200R011C10SPC500,V200R011C10SPC600,V200R019C00SPC500;S6700 V200R010C00SPC600,V200R011C10SPC500,V200R011C10SPC600;S7700 V200R010C00SPC600,V200R010C00SPC700,V200R011C10SPC500,V200R011C10SPC600;S9700 V200R010C00SPC600,V200R011C10SPC500,V200R011C10SPC600;USG9500 V500R005C00,V500R005C20.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 0.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2021-10-27 01:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 04:00 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.7% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2021-10-27 01:15 UTC
Last modified: 2026-06-17 04:00 UTC
Exploit probability: 0.7% · EPSS, next 30 days
Weakness: CWE-787 · Out-of-bounds write
Record status: Modified

Affected

Huawei Ips Module Firmware v500r005c00
Huawei Ips Module Firmware v500r005c20
Huawei Ngfw Module Firmware v500r005c00
Huawei nip6600 Firmware v500r005c00
Huawei nip6600 Firmware v500r005c20
Huawei s12700 Firmware v200r010c00spc600
Huawei s12700 Firmware v200r011c10spc500
Huawei s12700 Firmware v200r011c10spc600

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-37129.md and follow it. Check whether this project is affected by CVE-2021-37129. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record