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Vulnerability record · CVE-2020-1787 · published 9 January 2020

CVE-2020-1787: Huawei mate 20 firmware improper authentication vulnerability

Huawei · Mate 20 Firmware

HUAWEI Mate 20 smartphones versions earlier than 9.1.0.139(C00E133R3P1) have an improper authentication vulnerability. The system has a logic error under certain scenario, successful exploit could allow the attacker who gains the privilege of guest user to access to the host user's desktop in an instant, without unlocking the screen lock of the host user.

6.6 CVSS 3.1 Medium EPSS 0.26% · top 83.4% CWE-287 · Improper authentication
6.6CVSS 3.1 base score, v2 7.2
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

HUAWEI Mate 20 smartphones versions earlier than 9.1.0.139(C00E133R3P1) have an improper authentication vulnerability. The system has a logic error under certain scenario, successful exploit could allow the attacker who gains the privilege of guest user to access to the host user's desktop in an instant, without unlocking the screen lock of the host user.

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200108-02-smartphone-en Vendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200108-02-smartphone-en Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-1787), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.