Buffer Overflow Vulnerability in D-Link DIR-822K and DWR-M920
CVE-2025-13551

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-822k
Dwr-m920
Vendor
CVE Published:
23 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-13551?

A buffer overflow vulnerability has been discovered in the D-Link DIR-822K and DWR-M920 routers, specifically within the file /boafrm/formWanConfigSetup. This vulnerability can be exploited remotely by manipulating the submit-url argument, potentially allowing an unauthorized user to execute arbitrary code or crash the device. This issue poses a significant risk due to the availability of public exploits and highlights the need for immediate attention and mitigation strategies.

Affected Version(s)

DIR-822K 1.00_20250513164613

DIR-822K 1.1.50

DWR-M920 1.00_20250513164613

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-2025-13551 - Proof of Concept

References

https://vuldb.com/?id.333318
vdb-entrytechnical-description
https://vuldb.com/?ctiid.333318
signaturepermissions-required
https://vuldb.com/?submit.693785
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

hhsw34 (VulDB User)
JSON
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CVE-2025-13551 : Buffer Overflow Vulnerability in D-Link DIR-822K and DWR-M920