VULNERABILITY INTELLIGENCE

CVE-2020-23533

CVSS score7.5 HIGH

EPSS probability0.92%

CISA KEVNot currently listed

Published2021-04-06

Last modified2026-06-17

Description

Union Pay up to 1.2.0, for web based versions contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows attackers to shop for free in merchants' websites and mobile apps, via a crafted authentication code (MAC) which is generated based on a secret key which is NULL.