CVE intelligence and bounded remediation

CVE-2020-1882 — Huawei Mate 20 Rs Firmware security vulnerability

Medium CVSS 4.6

Huawei mobile phones Ever-L29B versions earlier than 10.0.0.180(C185E6R3P3), earlier than 10.0.0.180(C432E6R1P7), earlier than 10.0.0.180(C636E5R2P3); HUAWEI Mate 20 RS versions earlier than 10.0.0.175(C786E70R3P8); HUAWEI Mate 20 X versions earlier than 10.0.0.176(C00E70R2P8); and Honor Magic2 versions earlier than 10.0.0.175(C00E59R2P11) have an improper authorization vulnerability. Due to improper authorization of some function, attackers can bypass the authorization to perform some operations.

Severity
Medium
CVSS
4.6 (3.1)
Published
2020-02-18
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • huawei / mate_20_rs_firmware
  • huawei / mate_20_x_firmware
  • huawei / honor_magic2_firmware
  • huawei / ever-l29b_firmware

Showing 4 representative product identities from 6 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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