Insufficient Randomness Vulnerability in Tmall Demo Payment System
CVE-2025-5136

6.3MEDIUM

Key Information:

Vendor

Tmall

Status
Demo
Vendor
CVE Published:
25 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5136?

A vulnerability exists in the Tmall Demo's Payment Identifier Handler, where insufficiently random values can be manipulated. This weakness allows potential remote attacks, although the complexity of execution is notably high. As the product does not utilize versioning, details about specific affected or unaffected versions are not available. Despite early communication attempts with the vendor regarding this issue, no response has been received, indicating a critical need for awareness and attention among users.

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Affected Version(s)

Demo 20250505

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-5136 - Proof of Concept

References

https://vuldb.com/?id.310215
vdb-entry
https://vuldb.com/?ctiid.310215
signaturepermissions-required
https://vuldb.com/?submit.571960
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

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