Stack-Based Buffer Overflow in Totolink N300RH Web Management Interface
CVE-2026-10187

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
N300rh
Vendor
CVE Published:
31 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10187?

A stack-based buffer overflow vulnerability has been identified in the Totolink N300RH's Web Management Interface, specifically within the setWiFiBasicConfig function of the wireless.so component. This issue arises from improper handling of the KeyStr argument, which allows remote attackers to exploit the vulnerability. The exploit is now publicly accessible, making affected systems susceptible to unauthorized actions or a full system compromise.

Affected Version(s)

N300RH 6.1c.1353_B20190305

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-2026-10187 - Proof of Concept

References

https://vuldb.com/vuln/367468
vdb-entrytechnical-description
https://vuldb.com/vuln/367468/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10187
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
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

luotuo (VulDB User)
.