Heap-based Buffer Overflow in Tenda DAP-1520
CVE-2025-4355

8.7HIGH

Key Information:

Vendor

Tenda
Status
Dap-1520
Vendor
CVE Published:
6 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4355?

The Tenda DAP-1520 router is susceptible to a heap-based buffer overflow that occurs in the function set_ws_action accessible via the /dws/api/. This vulnerability may be exploited remotely, potentially allowing malicious actors to manipulate memory and execute arbitrary code. Disclosed publicly, this flaw emphasizes the need for immediate security measures to safeguard affected users against exploitation.

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Affected Version(s)

DAP-1520 1.10B04_BETA02

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-2025-4355 - Proof of Concept

References

https://vuldb.com/?id.307473
vdb-entrytechnical-description
https://vuldb.com/?ctiid.307473
signaturepermissions-required
https://vuldb.com/?submit.564720
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

duojie_0x00 (VulDB User)
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