VULNERABILITY INTELLIGENCE

CVE-2020-24355

CVSS score9.8 CRITICAL
EPSS probability2.18%
CISA KEVNot currently listed
Published2020-09-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-732

Primary references