There is a buffer error vulnerability in some Huawei product.

published 2024-12-27 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2020-29915

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

There is a buffer error vulnerability in some Huawei product. An unauthenticated attacker may send special UPNP message to the affected products. Due to insufficient input validation of some value, successful exploit may cause some service abnormal. (Vulnerability ID: HWPSIRT-2017-08234)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-9086.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 22 mo ago (2024-12-27)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	3.1	4.3	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Huawei HUAWEI 4G Router B612

Classification

Weakness

CWE-124 Buffer Underwrite
CWE-787 Out-of-bounds Write

References

huawei.com /en/psirt/security-advisories/huawei-sa-20200826-01-buffer_en
vendor-advisory

Sources

CVE List CVE-2020-9086
NVD CVE-2020-9086

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Summary