CVE-2023-39780

Published Sep 11, 2023

Last updated 11 days ago

ASUS

RT-AX55

Overview

AI description

Automated description summarized from trusted sources.

CVE-2023-39780 is a command injection vulnerability found in ASUS RT-AX55 routers, specifically version 3.0.0.4.386.51598. It allows authenticated attackers to execute arbitrary commands on the system. The vulnerability exists in the handling of user input, which enables attackers to inject and execute commands with elevated privileges. Successful exploitation of CVE-2023-39780 can lead to unauthorized actions and data breaches. Attackers have been observed exploiting this vulnerability, along with other authentication bypass techniques, to gain persistent access to ASUS routers, enabling SSH access and disabling logging to maintain a stealthy backdoor.

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.
Source: cve@mitre.org
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: ASUS RT-AX55 Routers OS Command Injection Vulnerability
Exploit added on: Jun 2, 2025
Exploit action due: Jun 23, 2025
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.

Weaknesses

cve@mitre.org: CWE-78
nvd@nist.gov: CWE-78

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:asus:rt-ax55_firmware:3.0.0.4.386.51598:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "0AABC778-3AC0-4730-953A-61175570FC81"
          }
        ],
        "operator": "OR"
      },
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:asus:rt-ax55:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "B8F27D4F-EDC4-4676-8C66-545378850BF1"
          }
        ],
        "operator": "OR"
      }
    ],
    "operator": "AND"
  }
]

References

Sources include official advisories and independent security research.