Buffer Overflow Vulnerability in Totolink LR350 Router
CVE-2026-1158

8.7HIGH

Key Information:

Vendor

Totolink
Status
Lr350
Vendor
CVE Published:
19 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1158?

A security flaw exists in the Totolink LR350 router, particularly in the function setWizardCfg within the POST Request Handler component. This vulnerability allows for remote exploitation through a manipulated argument, leading to a buffer overflow. As a result, attackers can potentially compromise the device's integrity. The flaw has been publicly disclosed, highlighting its significance in the realm of cybersecurity, necessitating prompt attention from affected users.

Affected Version(s)

LR350 9.3.5u.6369_B20220309

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-2026-1158 - Proof of Concept

References

https://vuldb.com/?id.341752
vdb-entrytechnical-description
https://vuldb.com/?ctiid.341752
signaturepermissions-required
https://vuldb.com/?submit.735728
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

yhryhryhr_tu (VulDB User)
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