EUVD-2025-19206

| CVE-2025-34049 CRITICAL
2025-06-26 [email protected]
9.4
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None

Lifecycle Timeline

4
Analysis Generated
Mar 15, 2026 - 23:54 vuln.today
EUVD ID Assigned
Mar 15, 2026 - 23:54 euvd
EUVD-2025-19206
PoC Detected
Dec 31, 2025 - 21:15 vuln.today
Public exploit code
CVE Published
Jun 26, 2025 - 16:15 nvd
CRITICAL 9.4

Description

An OS command injection vulnerability exists in the OptiLink ONT1GEW GPON router firmware version V2.1.11_X101 Build 1127.190306 and earlier. The router’s web management interface fails to properly sanitize user input in the target_addr parameter of the formTracert and formPing administrative endpoints. An authenticated attacker can inject arbitrary operating system commands, which are executed with root privileges, leading to remote code execution. Successful exploitation enables full compromise of the device. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-04 UTC.

Analysis

An OS command injection vulnerability exists in the OptiLink ONT1GEW GPON router firmware version V2.1.11_X101 Build 1127.190306 and earlier. The router’s web management interface fails to properly sanitize user input in the target_addr parameter of the formTracert and formPing administrative endpoints. An authenticated attacker can inject arbitrary operating system commands, which are executed with root privileges, leading to remote code execution. Successful exploitation enables full compromise of the device. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-04 UTC.

Technical Context

Command injection allows an attacker to execute arbitrary OS commands on the host system through a vulnerable application that passes user input to system shells. This vulnerability is classified as OS Command Injection (CWE-78).

Remediation

Avoid passing user input to system commands. Use language-specific APIs instead of shell commands. If unavoidable, use strict input validation and escaping.

Priority Score

67
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +47
POC: +20

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EUVD-2025-19206 vulnerability details – vuln.today

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