What is the CVSS score of CVE-2026-1155?

CVE-2026-1155 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-2026-1155?

Organizations using A vulnerability face significant risk from CVE-2026-1155, a buffer overflow vulnerability rated CVSS 8.8.

Is there a public PoC exploit available for CVE-2026-1155?

Yes, a public proof-of-concept exploit is available for CVE-2026-1155. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1155?

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

Lr350 Firmware CVE-2026-1155

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 - 18:39 vuln.today

Public exploit code

CVE Published

Jan 19, 2026 - 13:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. Affected by this vulnerability is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.

AnalysisAI

Buffer overflow in Totolink LR350 firmware allows authenticated remote attackers to achieve complete system compromise through a malformed SSID parameter in the WiFi guest configuration function. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with network access and valid credentials can execute arbitrary code with full system privileges.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Lr350 Firmware. A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. Affected by this vulnerability is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.

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.