CVE-2021-37129

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.

Published: 2021-10-27 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-37129 is rated Moderate Risk (46.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.66%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-37129

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.18% 0.66% +0.47%
2 2025-03-30 0.29% 0.18% -0.10%
3 2025-03-29 — 0.29% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37129

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-37129

Affected software / configurations for CVE-2021-37129

Vendor Product Version Raw CPE
huawei ips_module_firmware v500r005c00 cpe:2.3:o:huawei:ips_module_firmware:v500r005c00:*:*:*:*:*:*:*
huawei ips_module_firmware v500r005c20 cpe:2.3:o:huawei:ips_module_firmware:v500r005c20:*:*:*:*:*:*:*
huawei ngfw_module_firmware v500r005c00 cpe:2.3:o:huawei:ngfw_module_firmware:v500r005c00:*:*:*:*:*:*:*
huawei nip6600_firmware v500r005c00 cpe:2.3:o:huawei:nip6600_firmware:v500r005c00:*:*:*:*:*:*:*
huawei nip6600_firmware v500r005c20 cpe:2.3:o:huawei:nip6600_firmware:v500r005c20:*:*:*:*:*:*:*
huawei s12700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s12700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s12700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s12700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s12700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s12700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s12700_firmware v200r013c00spc500 cpe:2.3:o:huawei:s12700_firmware:v200r013c00spc500:*:*:*:*:*:*:*
huawei s12700_firmware v200r019c00spc200 cpe:2.3:o:huawei:s12700_firmware:v200r019c00spc200:*:*:*:*:*:*:*
huawei s12700_firmware v200r019c00spc500 cpe:2.3:o:huawei:s12700_firmware:v200r019c00spc500:*:*:*:*:*:*:*
huawei s12700_firmware v200r019c10spc200 cpe:2.3:o:huawei:s12700_firmware:v200r019c10spc200:*:*:*:*:*:*:*
huawei s12700_firmware v200r020c00 cpe:2.3:o:huawei:s12700_firmware:v200r020c00:*:*:*:*:*:*:*
huawei s12700_firmware v200r020c10 cpe:2.3:o:huawei:s12700_firmware:v200r020c10:*:*:*:*:*:*:*
huawei s1700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s1700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s1700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s1700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s1700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s1700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s2700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s2700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s2700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s2700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s2700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s2700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s5700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s5700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s5700_firmware v200r010c00spc700 cpe:2.3:o:huawei:s5700_firmware:v200r010c00spc700:*:*:*:*:*:*:*
huawei s5700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s5700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s5700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s5700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s5700_firmware v200r019c00spc500 cpe:2.3:o:huawei:s5700_firmware:v200r019c00spc500:*:*:*:*:*:*:*
huawei s6700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s6700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s6700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s6700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s6700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s6700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s7700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s7700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s7700_firmware v200r010c00spc700 cpe:2.3:o:huawei:s7700_firmware:v200r010c00spc700:*:*:*:*:*:*:*
huawei s7700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s7700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s7700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s7700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei s9700_firmware v200r010c00spc600 cpe:2.3:o:huawei:s9700_firmware:v200r010c00spc600:*:*:*:*:*:*:*
huawei s9700_firmware v200r011c10spc500 cpe:2.3:o:huawei:s9700_firmware:v200r011c10spc500:*:*:*:*:*:*:*
huawei s9700_firmware v200r011c10spc600 cpe:2.3:o:huawei:s9700_firmware:v200r011c10spc600:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c00 cpe:2.3:o:huawei:usg9500_firmware:v500r005c00:*:*:*:*:*:*:*
huawei usg9500_firmware v500r005c20 cpe:2.3:o:huawei:usg9500_firmware:v500r005c20:*:*:*:*:*:*:*

References for CVE-2021-37129

cvelogic Threat Intelligence