How severe is CVE-2021-37127?

CVE-2021-37127 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37127 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37127?

CVE-2021-37127 primarily affects Huawei Imanager Neteco 6000 Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37127?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-37127 published?

CVE-2021-37127 was published on 2021-10-27 and last updated on 2026-06-17.

CVE-2021-37127

CVE-2021-37127 is a high-severity vulnerability in Huawei Imanager Neteco 6000 Firmware with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Huawei Imanager Neteco 6000 Firmware
Published: 2021-10-27
Last modified: 2026-06-17

Description

There is a signature management vulnerability in some huawei products. An attacker can forge signature and bypass the signature check. During firmware update process, successful exploit this vulnerability can cause the forged system file overwrite the correct system file. Affected product versions include:iManager NetEco V600R010C00CP2001,V600R010C00CP2002,V600R010C00SPC100,V600R010C00SPC110,V600R010C00SPC120,V600R010C00SPC200,V600R010C00SPC210,V600R010C00SPC300;iManager NetEco 6000 V600R009C00SPC100,V600R009C00SPC110,V600R009C00SPC120,V600R009C00SPC190,V600R009C00SPC200,V600R009C00SPC201,V600R009C00SPC202,V600R009C00SPC210.

Frequently asked questions

What is CVE-2021-37127?: There is a signature management vulnerability in some huawei products. An attacker can forge signature and bypass the signature check. During firmware update process, successful exploit this vulnerability can cause the forged system file overwrite the correct system file. Affected product versions include:iManager NetEco V600R010C00CP2001,V600R010C00CP2002,V600R010C00SPC100,V600R010C00SPC110,V600R010C00SPC120,V600R010C00SPC200,V600R010C00SPC210,V600R010C00SPC300;iManager NetEco 6000 V600R009C00SPC100,V600R009C00SPC110,V600R009C00SPC120,V600R009C00SPC190,V600R009C00SPC200,V600R009C00SPC201,V600R009C00SPC202,V600R009C00SPC210.
How severe is CVE-2021-37127?: CVE-2021-37127 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37127 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37127?: CVE-2021-37127 primarily affects Huawei Imanager Neteco 6000 Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37127?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-37127 published?: CVE-2021-37127 was published on 2021-10-27 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20211020-01-signature-en

Affected products (16)

cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00cp2001:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00cp2002:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc100:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc110:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc120:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc200:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc210:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_6000_firmware:v600r010c00spc300:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc100:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc110:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc120:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc190:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc200:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc201:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc202:*:*:*:*:*:*:*
cpe:2.3:o:huawei:imanager_neteco_firmware:v600r009c00spc210:*:*:*:*:*:*:*

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