CVE-2023-39780

HIGH

8.8

CVSS Score

Published: September 11, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 06:12 AM UTC

2 products affected across 1 vendorRt AX55 FirmwareRt-Ax55

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Severity

HIGH8.8

Exploitation

CISA KEV

Exploit prediction

EPSS 40%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score39.5%

EPSS (Exploit Prediction Scoring System) estimates a 39.5% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

ASUS RT-AX55 devices contain an OS command injection vulnerability that could allow a remote, authenticated attacker to execute arbitrary commands. As represented by CVE-2023-41346.

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.

Ransomware Use

Unknown

Added to KEV

Jun 2, 2025

Remediation Due

Jun 23, 2025

491 days overdue

Notes

https://www.asus.com/networking-iot-servers/wifi-6/all-series/rt-ax55/helpdesk_bios/?model2Name=RT-AX55

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

https://nvd.nist.gov/vuln/detail/CVE-2023-39780

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.