CVE-2023-39780

Name: CVE-2023-39780
Creator: NVD / NIST
Published: 2023-09-11T19:15:43.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 32.16%

Last modified Jun 17, 2026

CVE-2023-39780 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 32.16% chance of exploitation in the next 30 days.

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

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

32.16%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 23, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Asus	Rt-Ax55 Firmware	3.0.0.4.386.51598

References

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/1/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/2/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/3/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/4/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/5/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/6/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/1/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/2/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/3/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/4/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/5/EN.mdExploit, Third Party Advisory
https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/6/EN.mdExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-39780US Government Resource
https://www.greynoise.io/blog/stealthy-backdoor-campaign-affecting-asus-routersExploit, Third Party Advisory

Timeline

Published: Sep 11, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-39780?

How severe is CVE-2023-39780?

CVE-2023-39780 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 32.16% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-39780?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39780?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST