CVE-2026-17518

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-17518
StatePUBLISHED
AssignerASUS
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-20 02:17:11 UTC
Updated2026-10-20 20:17:24 UTC
DescriptionBuffer 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.

Risk And Classification

Primary CVSS: v4.0 8.2 HIGH from 54bf65a7-a193-42d2-b1ba-8e150d3c35e1

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.001470000 probability, percentile 0.035560000 (date 2026-10-20)

Problem Types: CWE-121 | CWE-121 CWE-121: Stack-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
4.054bf65a7-a193-42d2-b1ba-8e150d3c35e1Secondary8.2HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:H/E:X/C...
4.0CNACVSS8.2HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:H

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality
None
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
High

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ASUS Router affected ASUSWRT 3.0.0.4_386 series custom Not specified
CNA ASUS Router affected ASUSWRT 3.0.0.4_388 series Not specified

References

ReferenceSourceLinkTags
www.asus.com/security-advisory 54bf65a7-a193-42d2-b1ba-8e150d3c35e1 www.asus.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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