How severe is CVE-2020-9067?

CVE-2020-9067 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-9067 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9067?

CVE-2020-9067 primarily affects Huawei Smartax Ma5600t Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9067?

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-2020-9067 published?

CVE-2020-9067 was published on 2020-04-02 and last updated on 2026-06-17.

CVE-2020-9067

CVE-2020-9067 is a high-severity vulnerability in Huawei Smartax Ma5600t Firmware with a CVSS 3.x base score of 8.0. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v2: 5.2
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Huawei Smartax Ma5600t Firmware
Published: 2020-04-02
Last modified: 2026-06-17

Description

There is a buffer overflow vulnerability in some Huawei products. The vulnerability can be exploited by an attacker to perform remote code execution on the affected products when the affected product functions as an optical line terminal (OLT). Affected product versions include:SmartAX MA5600T versions V800R013C10, V800R015C00, V800R015C10, V800R017C00, V800R017C10, V800R018C00, V800R018C10; SmartAX MA5800 versions V100R017C00, V100R017C10, V100R018C00, V100R018C10, V100R019C10; SmartAX EA5800 versions V100R018C00, V100R018C10, V100R019C10.

Frequently asked questions

What is CVE-2020-9067?: There is a buffer overflow vulnerability in some Huawei products. The vulnerability can be exploited by an attacker to perform remote code execution on the affected products when the affected product functions as an optical line terminal (OLT). Affected product versions include:SmartAX MA5600T versions V800R013C10, V800R015C00, V800R015C10, V800R017C00, V800R017C10, V800R018C00, V800R018C10; SmartAX MA5800 versions V100R017C00, V100R017C10, V100R018C00, V100R018C10, V100R019C10; SmartAX EA5800 versions V100R018C00, V100R018C10, V100R019C10.
How severe is CVE-2020-9067?: CVE-2020-9067 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-9067 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9067?: CVE-2020-9067 primarily affects Huawei Smartax Ma5600t Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9067?: 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-2020-9067 published?: CVE-2020-9067 was published on 2020-04-02 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200401-01-overflow-en

Affected products (15)

cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r013c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r015c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r015c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r017c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r017c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r018c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5600t_firmware:v800r018c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5800_firmware:v100r017c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5800_firmware:v100r017c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5800_firmware:v100r018c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5800_firmware:v100r018c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ma5800_firmware:v100r019c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ea5800_firmware:v100r018c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ea5800_firmware:v100r018c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:smartax_ea5800_firmware:v100r019c10:*:*:*:*:*:*:*

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