CVE-2026-17518

Authenticated HTTP Buffer Overflow Causing Denial of Service in ASUS Routers

Published Oct 20, 2026 CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Authenticated HTTP Buffer Overflow Causing Denial of Service in ASUS Routers
Type Values Removed Values Added
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.
First Time appeared Asus
Asus router
Weaknesses CWE-121
CPEs cpe:2.3:a:asus:router:asuswrt_3.0.0.4_386_series:*:*:*:*:*:*:*
cpe:2.3:a:asus:router:asuswrt_3.0.0.4_388_series:*:*:*:*:*:*:*
Vendors & Products Asus
Asus router
References
Metrics cvssV4_0

{'score': 8.2, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ASUS
Published
Updated
Oct 20, 2026, 7:17 PM
Reserved
Jul 27, 2026, 8:03 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 2:17 AM
Modified
Oct 20, 2026, 8:17 PM