Lr350 Firmware CVE-2022-44249

CRITICAL

OS Command Injection (CWE-78)

2022-11-23 cve@mitre.org

Command Injection Lr350 Firmware TOTOLINK

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-78 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization OS command sanitization, avoid shell exec MITRE ATT&CK 2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	A remote attacker could execute arbitrary operating system commands on the host by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

No patch listed yet 1.8% exploitation probability (EPSS)

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AnalysisAI

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the UploadFirmwareFile function. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.

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Technical ContextAI · show details

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the UploadFirmwareFile function. Affected products include: Totolink Lr350 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/PR:N/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

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the UploadFirmwareFile function.

Threat Intelligence Overview

EPSS Score

1.8%

Top 24% exploitable

Exploit

POC

Public exploit code exists

Data Quality

2 sources

Confidence: Low

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 1.8%

Patch available No

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

71

Low Medium High Critical

KEV: 0

EPSS: +2

CVSS: +49

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Affected Products (CPE)NVD

cpe:2.3:o:totolink:lr350_firmware:9.3.5u.6369_b20220309:*:*:*:*:*:*:*

More in Lr350 Firmware

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CVE-2024-42967 CRITICAL Act Now POC

Incorrect access control in TOTOLINK LR350 V9.3.5u.6369_B20220309 allows attackers to obtain the apmib configuration fil

CVE-2023-37149 CRITICAL Act Now POC

TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the FileName param

CVE-2023-37148 CRITICAL Act Now POC

TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the ussd parameter

CVE-2023-37146 CRITICAL Act Now POC

TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the FileName param

CVE-2023-37145 CRITICAL Act Now POC

TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the hostname param

CVE-2022-44255 CRITICAL Act Now POC

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post d

CVE-2022-44252 CRITICAL Act Now POC

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the FileName parameter in the setUploadSetting

CVE-2022-44251 CRITICAL Act Now POC

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the ussd parameter in the setUssd function. Rat

CVE-2022-44250 CRITICAL Act Now POC

TOTOLINK NR1800X V9.1.0u.6279_B20210910 contains a command injection via the hostName parameter in the setOpModeCfg func

CVE-2026-1158 HIGH This Week POC

Buffer overflow in Totolik LR350 firmware allows authenticated remote attackers to achieve full system compromise throug

CVE-2026-1157 HIGH This Week POC

Stack-based buffer overflow in Totolink LR350 firmware (version 9.3.5u.6369_B20220309) allows authenticated remote attac

CVE-2026-1156 HIGH This Week POC

Unauthenticated remote attackers can exploit a buffer overflow in the WiFi configuration function of Totolink LR350 firm

Same weakness CWE-78 – OS Command Injection

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References

Advisories & patches

ADVISORY https://vuldb.com/vuln/214280

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