What is the CVSS score of CVE-2019-5220?

CVE-2019-5220 has a CVSS 3.0 base score of 4.6 (Medium). CVSS vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.2%.

Mate 20 X Firmware CVE-2019-5220

MEDIUM

Incorrect Authorization (CWE-863)

2019-07-10 psirt@huawei.com

Authentication Bypass Mate 20 X Firmware Mate 20 Firmware Honor Magic 2 Firmware

4.6

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

4.6 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Jul 10, 2019 - 18:15 nvd

MEDIUM 4.6

DescriptionNVD

There is a Factory Reset Protection (FRP) bypass vulnerability on several smartphones. The system does not sufficiently verify the permission, an attacker could do a certain operation on certain step of setup wizard. Successful exploit could allow the attacker bypass the FRP protection. Affected products: Mate 20 X, versions earlier than Ever-AL00B 9.0.0.200(C00E200R2P1); Mate 20, versions earlier than Hima-AL00B/Hima-TL00B 9.0.0.200(C00E200R2P1); Honor Magic 2, versions earlier than Tony-AL00B/Tony-TL00B 9.0.0.182(C00E180R2P2).

AnalysisAI

There is a Factory Reset Protection (FRP) bypass vulnerability on several smartphones. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. There is a Factory Reset Protection (FRP) bypass vulnerability on several smartphones. The system does not sufficiently verify the permission, an attacker could do a certain operation on certain step of setup wizard. Successful exploit could allow the attacker bypass the FRP protection. Affected products: Mate 20 X, versions earlier than Ever-AL00B 9.0.0.200(C00E200R2P1); Mate 20, versions earlier than Hima-AL00B/Hima-TL00B 9.0.0.200(C00E200R2P1); Honor Magic 2, versions earlier than Tony-AL00B/Tony-TL00B 9.0.0.182(C00E180R2P2). Affected products include: Huawei Mate 20 X Firmware, Huawei Mate 20 Firmware, Huawei Honor Magic 2 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.