VULNERABILITY INTELLIGENCE

CVE-2020-36284

CVSS score7.5 HIGH
EPSS probability0.90%
CISA KEVNot currently listed
Published2021-04-06
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Description

Union Pay up to 3.4.93.4.9, for android, 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.

Weakness classification

  • nvd@nist.gov: CWE-347

Primary references