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CVE-2026-17518

Quick assessment

Affected
ASUS Router
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.

某些华硕（ASUS）路由器型号中存在“复制缓冲区时未检查输入大小”的漏洞，该漏洞允许相邻的已认证用户通过发送输入长度超出预期值的 HTTP 请求，破坏设备正常运行并导致拒绝服务（DoS）。 更多信息请参阅华硕安全公告中的“华硕路由器固件安全更新”部分。

CVSS 8.2 · High

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood
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I. Basic Information for CVE-2026-17518

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Buffer Copy without Checking Size of Input in certain ASUS router models allows an adjacent authenticated user to corrupt device operations and cause a denial of service via an HTTP request with input exceeding the expected length. Refer to the ' Security Update for ASUS Router Firmware' section on the ASUS Security Advisory for more information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA: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
ASUS Router ASUSWRT 3.0.0.4_386 series -

II. Public POCs for CVE-2026-17518

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III. Intelligence Information for CVE-2026-17518

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Vendor Advisories for CVE-2026-17518 (1)

Same Patch Batch · ASUS · 2026-10-20 · 3 CVEs total

CVE-2026-102438 8.5 HIGH ASUS Armoury Crate 任意代码执行漏洞
CVE-2026-75753 5.3 MEDIUM ASUS 路由器固件关键功能缺失认证漏洞

IV. Related Vulnerabilities

Same product: Router
Same vendor: ASUS
Same weakness: CWE-121

V. Comments for CVE-2026-17518

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