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CVE-2026-108893— Linksys E1700 setVlan stack-based overflow

Quick assessment

Affected
Linksys E1700
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linksys E1700 路由器（固件版本最高至 1.0.0.4.003）中发现一个安全漏洞。该漏洞影响文件 /goform/setVlan 中的 setVlan 函数，对参数 vlan_set 的操纵可导致基于栈的缓冲区溢出。攻击者可以远程发起攻击。该漏洞的利用代码已公开，可能被实际利用。厂商在漏洞披露早期即被联系，但未作任何回应。

CVSS 9.9 · Critical EPSS 0.53% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Linksys E1700 1.0.0.4.003 affected
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I. Basic Information for CVE-2026-108893

Vulnerability Information
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Vulnerability Title
Linksys E1700 setVlan stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in Linksys E1700 up to 1.0.0.4.003. This issue affects the function setVlan of the file /goform/setVlan. Such manipulation of the argument vlan_set leads to stack-based buffer overflow. The attack may be launched remotely. The exploit is publicly available and might 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:C/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linksys E1700 1.0.0.4.003 cpe:2.3:o:linksys:e1700_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-108893

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III. Intelligence Information for CVE-2026-108893

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News Coverage for CVE-2026-108893 (1)

Same Patch Batch · Linksys · 2026-10-12 · 5 CVEs total

CVE-2026-108892 10.0 CRITICAL Linksys E1700 Mac Filter ssid1MACFilter stack-based overflow
CVE-2026-108894 9.9 CRITICAL Linksys E1700 Static Route addStaticRoute os command injection
CVE-2026-108896 9.9 CRITICAL Linksys E1700 setLinksysIpv6 os command injection
CVE-2026-108895 9.9 CRITICAL Linksys E1700 setDMZ os command injection

IV. Related Vulnerabilities

Same product: E1700
Same vendor: Linksys
Same weakness: CWE-121

V. Comments for CVE-2026-108893

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