CVE-2020-36284 is a critical vulnerability affecting Union Pay versions up to 3.4.9 on Android, stemming from an improper verification of cryptographic signatures (CWE-347). This flaw allows attackers to bypass authentication and make unauthorized purchases on merchant websites and mobile applications by crafting an authentication code based on a NULL secret key. Rated with a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, leading to high integrity impact without requiring user interaction. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.4.93.4.9CPE matchmatch criteria | cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:android:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.