CVE-2026-19386

Stack‑Based Buffer Overflow in ASUS Router Firmware Allows Authenticated Arbitrary Code Execution

Published Oct 7, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
A stack-based buffer overflow in the ASUS router modules allows an authenticated nearby user to execute arbitrary code via a crafted configuration file upload that exceeds the expected buffer size.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': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Stack‑Based Buffer Overflow in ASUS Router Firmware Allows Authenticated Arbitrary Code Execution
Type Values Removed Values Added
Description A stack-based buffer overflow in the ASUS router modules allows an authenticated nearby user to execute arbitrary code via a crafted configuration file upload that exceeds the expected buffer size.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:3.0.0.6.102_series:*:*:*:*:*:*:*
Vendors & Products Asus
Asus router
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ASUS
Published
Updated
Oct 8, 2026, 3:55 AM
Reserved
Aug 10, 2026, 12:26 AM
Status
Deferred
Published
Oct 7, 2026, 2:16 AM
Modified
Oct 8, 2026, 4:17 AM