What is the CVSS score of CVE-2026-1156?

CVE-2026-1156 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-2026-1156?

Organizations using A vulnerability face significant risk from CVE-2026-1156, a buffer overflow vulnerability rated CVSS 8.8.

Is there a public PoC exploit available for CVE-2026-1156?

Yes, a public proof-of-concept exploit is available for CVE-2026-1156. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1156?

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

Lr350 Firmware CVE-2026-1156

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 - 18:40 vuln.today

Public exploit code

CVE Published

Jan 19, 2026 - 14:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was determined in Totolink LR350 9.3.5u.6369_B20220309. Affected by this issue is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ssid causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

Unauthenticated remote attackers can exploit a buffer overflow in the WiFi configuration function of Totolink LR350 firmware version 9.3.5u.6369_B20220309 to achieve remote code execution with full system compromise. The vulnerability exists in the ssid parameter handler of /cgi-bin/cstecgi.cgi and requires only network access to trigger, with public exploit code already available. No patch is currently available for affected devices.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Lr350 Firmware. A vulnerability was determined in Totolink LR350 9.3.5u.6369_B20220309. Affected by this issue is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ssid causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

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.