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…
- 8.8HighCVSS base score
- 39.5%Exploitation in 30 daysEPSS · top 1.4% of all CVEs
- YesKnown exploitedin CISA's KEV since 2 Jun 2025
- YesPublic exploitsa reference or SSVC says so
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as ASUS RT-AX55 Routers OS Command Injection Vulnerability.
- Added
- 2 Jun 2025
- Fix due (US federal)
- 23 Jun 2025
- Used by ransomware
- Not known
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 2 Jun 2025.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By mitre
- 35 days later
· 35 days later
Published
- 21 months later
· 21 months later
Added to CISA KEV
Known exploited in the wild
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 39.5% · top 1.4% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
References
References8
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/1/EN.md (opens in a new tab)x_transferred
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/2/EN.md (opens in a new tab)x_transferred
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/3/EN.md (opens in a new tab)x_transferred
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/4/EN.md (opens in a new tab)x_transferred
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/5/EN.md (opens in a new tab)x_transferred
- https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/6/EN.md (opens in a new tab)x_transferred
- https://www.greynoise.io/blog/stealthy-backdoor-campaign-affecting-asus-routers (opens in a new tab)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-39780 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-43480 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-39780)Record last updated .