TI-2026-84916 Aliases CVE-2026-84730 GHSA-wmv8-643x-8jcp

ASUS Router firmware stack buffer overflow allows root command execution

MEDIUM 40CWE-121Published 2026-11-04 · Updated 2026-11-05

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

A stack-based buffer overflow (CWE-121) in certain ASUS Router firmware lets an unauthenticated attacker nearby run arbitrary commands with root privileges through a crafted device name. The flaw affects the ASUSWRT 3.0.0.4_386 series, the ASUSWRT 3.0.0.4_388 series and the ASUSWRT 3.0.0.6_102 series. The CVSS 4.0 base score is 8.7 (HIGH). CISA has not added it to KEV, and its SSVC rates exploitation as none and not automatable.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

Stack-based buffer overflow in certain ASUS Router firmware allows an unauthenticated nearby attacker to execute arbitrary commands with root privileges via a crafted device name. Refer to the ' Security Update for ASUS Router AiCloud Feature ' section on the ASUS Security Advisory for more information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00343 28th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ASUS	Router firmware	ASUSWRT 3.0.0.4_386 series; ASUSWRT 3.0.0.4_388 series; ASUSWRT 3.0.0.6_102 series	—	No fix listed	CNA

Router firmware VendorASUS Affected ASUSWRT 3.0.0.4_386 series; ASUSWRT 3.0.0.4_388 series; ASUSWRT 3.0.0.6_102 series Fixed in — No fix listed CNA

Remediation

No fixed version is listed for the affected ASUSWRT series. See the Security Update for ASUS Router AiCloud Feature section of the ASUS Security Advisory for more information.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

2026-11-04 Threatist record created from CVE-2026-84730
2026-11-04 Alias added: GHSA-wmv8-643x-8jcp
2026-11-04 CISA SSVC decision points changed
2026-11-04 Priority changed: MEDIUM → LOW
2026-11-05 Priority changed: LOW → MEDIUM
2026-11-05 CISA SSVC decision points changed

References

Other 1

https://www.asus.com/security-advisory

TI-2021-12008 The administrator application on ASUS GT-AC2900 devices before 3.0.0.4.386.42643 and Lyra… KEVCVSS 3.1CRITICAL 9.8
TI-2025-36933 "UNSUPPORTED WHEN ASSIGNED" Certain versions of the ASUS Live Update client were… KEVCVSS 4.0CRITICAL 9.3
TI-2023-20780 OS command injection in ASUS RT-AX55 KEVCVSS 3.1HIGH 8.8
TI-2018-04367 An issue was discovered in AsusWRT before 3.0.0.4.384_10007. CVSS 3.0CRITICAL 9.8
TI-2018-04368 An issue was discovered in AsusWRT before 3.0.0.4.384_10007. CVSS 3.0CRITICAL 9.8
TI-2014-07780 common.c in infosvr in ASUS WRT firmware 3.0.0.4.376_1071, 3.0.0.376.2524-g0013f52, and… CVSS 2.0HIGH 10.0

See all 365 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences