CVEvulnerability

CVE-2020-24355

9.8 CRITICAL Published 2020-09-02 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-09-02
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-732

Description

Zyxel VMG5313-B30B router on firmware 5.13(ABCJ.6)b3_1127, and possibly older versions of firmware are affected by insecure permissions which allows regular and other users to create new users with elevated privileges. This is done by changing "FirstIndex" field in JSON that is POST-ed during account creation. Similar may also be possible with account deletion.

Affected configurations

• zyxel vmg5313-b30b firmware (<= 5.13\(abcj.6\)b3 1127)

Related

Weakness · CWE (1)

  • CWE-732 Incorrect Permission Assignment for Critical Resource weakness

References