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CVE-2025-8833— Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchBack 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langSwitchBack函数对langSelectionOnly参数操作不当，可能导致栈缓冲区溢出。以下产品和版本受到影响：Linksys RE6250、Linksys RE6300、Linksys RE6350、Linksys RE6500、Linksys RE7000和Linksys RE9000 20250801及之前版本。

CVSS 8.8 · High EPSS 1.09% · P64 Updated Aug 12, 2025

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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I. Basic Information for CVE-2025-8833

Vulnerability Information

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Vulnerability Title

Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchBack 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. This issue affects the function langSwitchBack of the file /goform/langSwitchBack. The manipulation of the argument langSelectionOnly leads to stack-based buffer overflow. The attack may be initiated 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

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
Linksys	RE6250	20250801	-
Linksys	RE6300	20250801	-
Linksys	RE6350	20250801	-
Linksys	RE6500	20250801	-
Linksys	RE7000	20250801	-
Linksys	RE9000	20250801	-

II. Public POCs for CVE-2025-8833

#	POC Description	Source Link	Shenlong Link

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Qwen3.6-35B-A3B · 9151 chars

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III. Intelligence Information for CVE-2025-8833

请登录查看更多情报信息。

News Coverage for CVE-2025-8833 (1)

my_vuln/Linksys/vuln_38/38.md at main · wudipjq/my_vuln · GitHub related

https://www.cve.org/CVERecord?id=CVE-2025-8833

Same Patch Batch · Linksys · 2025-08-11 · 13 CVEs total

CVE-2025-8822	8.8 HIGH	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setOpMode algDisable stack-based overflo
CVE-2025-8824	8.8 HIGH	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setRIP stack-based overflow
CVE-2025-8826	8.8 HIGH	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto um_rp_autochannel stack-
CVE-2025-8831	8.8 HIGH	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 remoteManagement stack-based overflow
CVE-2025-8832	8.8 HIGH	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setDMZ stack-based overflow
CVE-2025-8821	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasic os command injection
CVE-2025-8823	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setDeviceName os command injection
CVE-2025-8825	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto os command injection
CVE-2025-8827	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto um_inspect_cross_band os
CVE-2025-8828	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setIpv6 ipv6cmd os command injection
CVE-2025-8829	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto um_red os command inject
CVE-2025-8830	6.3 MEDIUM	Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setWan sub_3517C os command injection

IV. Related Vulnerabilities

Same product: RE6250

Same vendor: Linksys

Same weakness: CWE-121

V. Comments for CVE-2025-8833

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2025-8833— Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchBack stack-based overflow

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2025-8833

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2025-8833

III. Intelligence Information for CVE-2025-8833

News Coverage for CVE-2025-8833 (1)

Same Patch Batch · Linksys · 2025-08-11 · 13 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2025-8833

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