Stack-based Buffer Overflow Vulnerability in Tenda FH1202 Routers
CVE-2025-7530

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh1202
Vendor
CVE Published:
13 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7530?

A remote exploit vulnerability has been identified in Tenda FH1202 routers, specifically in the fromPptpUserAdd function within the PPTPDClient interface. This issue arises due to improper handling of user input, which can lead to a stack-based buffer overflow. If exploited, an attacker could potentially execute arbitrary code, compromising the integrity and security of affected devices. It is crucial for users to secure their routers and apply any recommended patches to mitigate this risk.

Affected Version(s)

FH1202 1.2.0.14(408)

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-2025-7530 - Proof of Concept

References

https://vuldb.com/?id.316226
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316226
signaturepermissions-required
https://vuldb.com/?submit.612956
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

panda_0x1 (VulDB User)
.
CVE-2025-7530 : Stack-based Buffer Overflow Vulnerability in Tenda FH1202 Routers