There is a buffer overflow vulnerability in some Huawei products.

published 2020-04-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29896

cvss: 8.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

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.

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.0	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.2	AV:A/AC:L/Au:S/C:P/I:P/A:P

Affected products

n/a SmartAX MA5600T
n/a SmartAX MA5800
n/a SmartAX EA5800

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

huawei.com /en/psirt/security-advisories/huawei-sa-20200401-01-overflow-en
vendor-advisory

Sources

CVE List CVE-2020-9067
NVD CVE-2020-9067

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Summary