What is the CVSS score of CVE-2026-1158?

CVE-2026-1158 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Lr350 Firmware are affected by CVE-2026-1158?

Organizations using A security flaw face significant risk from CVE-2026-1158, a buffer overflow vulnerability rated CVSS 8.8.

Is there a public PoC exploit available for CVE-2026-1158?

Yes, a public proof-of-concept exploit is available for CVE-2026-1158. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1158?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

Lr350 Firmware CVE-2026-1158

HIGH

Buffer Overflow (CWE-119)

2026-01-19 cna@vuldb.com

Buffer Overflow Lr350 Firmware TOTOLINK

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 29, 2026 - 18:34 vuln.today

Public exploit code

CVE Published

Jan 19, 2026 - 15:15 nvd

HIGH 8.8

DescriptionCVE.org

A security flaw has been discovered in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

Buffer overflow in Totolik LR350 firmware allows authenticated remote attackers to achieve full system compromise through malicious SSID parameters in the wizard configuration endpoint. Public exploit code is available for this vulnerability, and no patch has been released, leaving deployed devices at immediate risk. The flaw requires valid credentials but enables complete confidentiality, integrity, and availability violations with network-level access.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Lr350 Firmware. A security flaw has been discovered in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.