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CVE-2023-39780

High 8.8 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
ASUS RT-AX55 Routers OS Command Injection Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Description

On ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /start_apply.htm qos_bw_rulelist parameter. NOTE: for the similar "token-generated module" issue, see CVE-2023-41345; for the similar "token-refresh module" issue, see CVE-2023-41346; for the similar "check token module" issue, see CVE-2023-41347; and for the similar "code-authentication module" issue, see CVE-2023-41348.

Metrics

CVSS 3.1
8.8 (HIGH) Score source: NVD CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
40% (percentile: 99) as of 2 November 2026
CWE
CWE-78

Affected products

asus: rt-ax55 firmware; asus: rt-ax55

References