Stack-Based Buffer Overflow in TOTOLINK A950RG Device-Information CGI
CVE-2026-116508

10CRITICAL

Key Information:

Vendor

Totolink
Status
A950rg
Vendor
CVE Published:
26 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-116508?

A vulnerable function in the Device-Information CGI of the TOTOLINK A950RG router allows for a stack-based buffer overflow when an attacker manipulates the CONTENT_LENGTH argument. This flaw poses a significant risk as it can be exploited remotely, enabling attackers to execute arbitrary code or cause a denial of service. The exploit has been publicly disclosed, increasing the urgency for users to apply patches or mitigations.

Affected Version(s)

A950RG 4.1.2cu.5268_B20221104

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-2026-116508 - Proof of Concept

References

https://vuldb.com/vuln/426406
vdb-entrytechnical-description
https://vuldb.com/vuln/426406/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-116508
third-party-advisory

CVSS V4

Score:
10
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

LiuYijun_JX.SGCC (VulDB User)
.