How to fix CVE-2025-8818?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Is Command Injection affected by CVE-2025-8818?

Organizations using A vulnerability should be aware of moderate risk from CVE-2025-8818, a command injection vulnerability rated CVSS 5.3. Exploitation could allow attackers to execute code or inject malicious input. Proof-of-concept code is publicly available.

CVE-2025-8818

MEDIUM

2025-08-10 [email protected]

5.3

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

PoC Detected

Sep 04, 2025 - 18:41 vuln.today

Public exploit code

CVE Published

Aug 10, 2025 - 23:15 nvd

MEDIUM 5.3

Description

A vulnerability has been found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected by this issue is the function setDFSSetting of the file /goform/setLan. The manipulation of the argument lanNetmask/lanIp leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Analysis

A vulnerability has been found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. A vulnerability has been found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected by this issue is the function setDFSSetting of the file /goform/setLan. The manipulation of the argument lanNetmask/lanIp leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Affected products include: Linksys Re6250 Firmware, Linksys Re6300 Firmware, Linksys Re6350 Firmware, Linksys Re6500 Firmware, Linksys Re9000 Firmware. Version information: up to 20250801..

Affected Products

Linksys Re6250 Firmware, Linksys Re6300 Firmware, Linksys Re6350 Firmware, Linksys Re6500 Firmware, Linksys Re9000 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.4

CVSS: +26

POC: +20

CVE-2025-8818 vulnerability details – vuln.today

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CVE-2025-8818

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CVE-2025-8818

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code