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CVE-2025-8817— Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setLan stack-based overflow

Quick assessment

Affected
Linksys RE6250
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linksys RE6250等都是美国Linksys公司的一款无线扩展器。 Linksys多款产品存在安全漏洞，该漏洞源于文件/goform/setLan中函数setLan参数lan2enabled导致栈缓冲区溢出，可能导致远程攻击。以下产品及版本受到影响：RE6250、RE6300、RE6350、RE6500、RE7000和RE9000 20250801及之前版本。

CVSS 8.8 · High EPSS 1.09% · P64
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I. Basic Information for CVE-2025-8817

Vulnerability Information
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Vulnerability Title
Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setLan stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected by this vulnerability is the function setLan of the file /goform/setLan. The manipulation of the argument lan2enabled leads to stack-based buffer overflow. The attack can 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Linksys多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linksys RE6250等都是美国Linksys公司的一款无线扩展器。 Linksys多款产品存在安全漏洞，该漏洞源于文件/goform/setLan中函数setLan参数lan2enabled导致栈缓冲区溢出，可能导致远程攻击。以下产品及版本受到影响：RE6250、RE6300、RE6350、RE6500、RE7000和RE9000 20250801及之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linksys RE6250 20250801 -
Linksys RE6300 20250801 -
Linksys RE6350 20250801 -
Linksys RE6500 20250801 -
Linksys RE7000 20250801 -
Linksys RE9000 20250801 -

II. Public POCs for CVE-2025-8817

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8465 chars
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III. Intelligence Information for CVE-2025-8817

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Same Patch Batch · Linksys · 2025-08-10 · 5 CVEs total

CVE-2025-8820 8.8 HIGH Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 wirelessBasic stack-based overflow
CVE-2025-8819 8.8 HIGH Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setWan stack-based overflow
CVE-2025-8816 8.8 HIGH Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setOpMode stack-based overflow
CVE-2025-8818 6.3 MEDIUM Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setLan setDFSSetting os command injectio

IV. Related Vulnerabilities

Same product: RE6250
Same vendor: Linksys
Same weakness: CWE-121

V. Comments for CVE-2025-8817

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