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Lr350 Firmware CVE-2026-1155

HIGH
Buffer Overflow (CWE-119)
2026-01-19 cna@vuldb.com
8.8
CVSS 3.1 · NVD
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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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to router web interface
Delivery
Send crafted HTTP POST to /cgi-bin/cstecgi.cgi
Exploit
Supply oversized ssid parameter to setWiFiEasyGuestCfg
Execution
Trigger buffer overflow
Impact
Execute arbitrary code as root

Vulnerability AssessmentAI

Exploitation Totolik LR350 firmware 9.3.5u.6369_B20220309. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote attacker could exploit this flaw, buffer overflow.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-1155 vulnerability details – vuln.today

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