What is CVE-2023-39780?

CVE-2023-39780 is a high-severity vulnerability in Asus Rt-ax55, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-09-11.

How severe is CVE-2023-39780?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-39780 known to be exploited?

Yes. CVE-2023-39780 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-06-02), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.

RCE in Asus Rt-ax55

CVE-2023-39780

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 simil…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.336 (98.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Asus Rt-ax55 — versions 3.0.0.4.386.51598
Asus Rt-ax55_firmware — versions 3.0.0.4.386.51598

Weakness classification (CWE)

CWE-78 — OS Command Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-06-02. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-06-23.

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.

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-39780?: CVE-2023-39780 is a high-severity vulnerability in Asus Rt-ax55, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-09-11.
How severe is CVE-2023-39780?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-39780 known to be exploited?: Yes. CVE-2023-39780 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-06-02), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.