CVE-2020-23533

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-347

Affected software

No affected versions have been published.

Timeline

Published
Apr 6, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-235349.8A server-side request forgery (SSRF) vulnerability in Upgrade.php of gopeak masterlab 2.1.5, via the 'source' parameter.CVE-2020-235397.5An issue was discovered in Realtek rtl8723de BLE Stack <= 4.1 that allows remote attackers to cause a Denial of Service via the interval fieCVE-2020-235457.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ReadXPM_W+0x0000000000000531.CVE-2020-235467.8IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted XBM file, related to a "DatCVE-2020-235497.8IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted .cr2 file, related to a "DaCVE-2020-235507.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e82.CVE-2020-235517.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e30.CVE-2020-235527.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e62.CVE-2020-235537.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007d33.CVE-2020-235547.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e20.CVE-2020-235557.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e6e.CVE-2020-235567.8IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e28.
CVE-2020-23533: High severity, CVSS 7.5 | Vulnix