CVE-2023-39780

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-06-02), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 40%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
40%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

September 11, 2023

Last Modified

October 31, 2025

Advisory Details (6)

Auto-updated Jun 2, 2026
No patch confirmed yet.
generic

CVE/asus/CVE-2023-39780/4/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/4/EN.md
generic

CVE/asus/CVE-2023-39780/3/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/3/EN.md
generic

CVE/asus/CVE-2023-39780/2/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/2/EN.md
generic

CVE/asus/CVE-2023-39780/1/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/1/EN.md
generic

CVE/asus/CVE-2023-39780/6/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/6/EN.md
generic

CVE/asus/CVE-2023-39780/5/EN.md at main · D2y6p/CVE · GitHub

https://github.com/D2y6p/CVE/blob/main/asus/CVE-2023-39780/5/EN.md

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 55× in last 7d / 232× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 874 total refreshes for this CVE.

  1. 2026-09-20 22:36 UTCGHSA enrichment
  2. 2026-09-20 18:26 UTCGHSA enrichment
  3. 2026-09-20 14:16 UTCGHSA enrichment
  4. 2026-09-20 10:07 UTCGHSA enrichment
  5. 2026-09-20 05:57 UTCGHSA enrichment
  6. 2026-09-20 01:47 UTCGHSA enrichment
  7. 2026-09-19 21:37 UTCGHSA enrichment
  8. 2026-09-19 17:27 UTCEG score recompute
  9. 2026-09-19 17:27 UTCGHSA enrichment
  10. 2026-09-19 13:17 UTCGHSA enrichment
  11. 2026-09-19 09:07 UTCGHSA enrichment
  12. 2026-09-19 04:57 UTCGHSA enrichment
  13. 2026-09-19 00:47 UTCGHSA enrichment
  14. 2026-09-18 20:37 UTCEG score recompute
  15. 2026-09-18 20:37 UTCGHSA enrichment
  16. 2026-09-18 19:25 UTCEPSS rescore
  17. 2026-09-18 19:20 UTCCISA KEV update
  18. 2026-09-18 16:27 UTCGHSA enrichment
  19. 2026-09-18 14:15 UTCCISA KEV update
  20. 2026-09-18 12:17 UTCGHSA enrichment
  21. 2026-09-18 08:07 UTCGHSA enrichment
  22. 2026-09-18 03:57 UTCGHSA enrichment
  23. 2026-09-17 23:47 UTCGHSA enrichment
  24. 2026-09-17 19:37 UTCEG score recompute
  25. 2026-09-17 19:37 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 19:25 UTCEPSS rescore
  2. 2026-09-17 15:27 UTCGHSA enrichment
  3. 2026-09-17 11:17 UTCGHSA enrichment
  4. 2026-09-17 07:07 UTCGHSA enrichment
  5. 2026-09-17 02:57 UTCGHSA enrichment
  6. 2026-09-16 22:47 UTCGHSA enrichment
  7. 2026-09-16 18:37 UTCGHSA enrichment
  8. 2026-09-16 14:27 UTCEG score recompute
  9. 2026-09-16 14:27 UTCGHSA enrichment
  10. 2026-09-16 14:10 UTCCISA KEV update
  11. 2026-09-16 14:06 UTCEPSS rescore
  12. 2026-09-16 14:06 UTCEPSS rescore
  13. 2026-09-16 10:16 UTCGHSA enrichment
  14. 2026-09-16 06:07 UTCEG score recompute
  15. 2026-09-16 06:07 UTCGHSA enrichment
  16. 2026-09-16 05:11 UTCEPSS rescore
  17. 2026-09-16 01:56 UTCGHSA enrichment
  18. 2026-09-15 21:46 UTCGHSA enrichment
  19. 2026-09-15 17:36 UTCGHSA enrichment
  20. 2026-09-15 13:26 UTCGHSA enrichment
  21. 2026-09-15 09:16 UTCGHSA enrichment
  22. 2026-09-15 05:06 UTCEG score recompute
  23. 2026-09-15 05:05 UTCGHSA enrichment
  24. 2026-09-15 00:55 UTCGHSA enrichment
  25. 2026-09-14 20:45 UTCGHSA enrichment
  26. 2026-09-14 19:24 UTCCISA KEV update
  27. 2026-09-14 16:35 UTCGHSA enrichment
  28. 2026-09-14 12:25 UTCGHSA enrichment
  29. 2026-09-14 08:15 UTCGHSA enrichment
  30. 2026-09-14 04:05 UTCGHSA enrichment
  31. 2026-09-13 23:56 UTCGHSA enrichment
  32. 2026-09-13 19:46 UTCEG score recompute
  33. 2026-09-13 19:46 UTCGHSA enrichment
  34. 2026-09-13 16:44 UTCEPSS rescore
  35. 2026-09-13 15:36 UTCGHSA enrichment
  36. 2026-09-13 11:24 UTCGHSA enrichment
  37. 2026-09-13 07:14 UTCGHSA enrichment
  38. 2026-09-13 03:04 UTCGHSA enrichment
  39. 2026-09-12 22:55 UTCGHSA enrichment
  40. 2026-09-12 18:45 UTCEG score recompute
  41. 2026-09-12 18:45 UTCGHSA enrichment
  42. 2026-09-12 14:58 UTCEPSS rescore
  43. 2026-09-12 14:35 UTCGHSA enrichment
  44. 2026-09-12 10:25 UTCGHSA enrichment
  45. 2026-09-12 06:15 UTCGHSA enrichment
  46. 2026-09-12 02:05 UTCGHSA enrichment
  47. 2026-09-11 21:55 UTCGHSA enrichment
  48. 2026-09-11 18:49 UTCCISA KEV update
  49. 2026-09-11 17:45 UTCEG score recompute
  50. 2026-09-11 17:45 UTCGHSA enrichment
  51. 2026-09-11 14:50 UTCEPSS rescore
  52. 2026-09-11 13:35 UTCEG score recompute
  53. 2026-09-11 13:35 UTCGHSA enrichment
  54. 2026-09-11 09:34 UTCEPSS rescore
  55. 2026-09-11 09:25 UTCGHSA enrichment
  56. 2026-09-11 05:15 UTCGHSA enrichment
  57. 2026-09-11 01:05 UTCGHSA enrichment
  58. 2026-09-10 20:54 UTCGHSA enrichment
  59. 2026-09-10 19:28 UTCCISA KEV update
  60. 2026-09-10 16:45 UTCGHSA enrichment
  61. 2026-09-10 12:35 UTCEG score recompute
  62. 2026-09-10 12:35 UTCGHSA enrichment
  63. 2026-09-10 08:25 UTCGHSA enrichment
  64. 2026-09-10 04:14 UTCGHSA enrichment
  65. 2026-09-10 00:04 UTCGHSA enrichment
  66. 2026-09-09 19:53 UTCGHSA enrichment
  67. 2026-09-09 19:08 UTCCISA KEV update
  68. 2026-09-09 15:42 UTCGHSA enrichment
  69. 2026-09-09 11:32 UTCGHSA enrichment
  70. 2026-09-09 07:22 UTCGHSA enrichment
  71. 2026-09-09 03:12 UTCGHSA enrichment
  72. 2026-09-08 23:01 UTCGHSA enrichment
  73. 2026-09-08 18:54 UTCCISA KEV update
  74. 2026-09-08 18:49 UTCGHSA enrichment
  75. 2026-09-08 14:39 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2023-39780?
CVE-2023-39780 is a critical vulnerability published on September 11, 2023. On ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /startapply.htm qosbw_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…
When was CVE-2023-39780 disclosed?
CVE-2023-39780 was first published in the National Vulnerability Database on September 11, 2023, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-39780 actively exploited?
Yes. CISA added CVE-2023-39780 to the Known Exploited Vulnerabilities catalog on June 2, 2025, affecting ASUS RT-AX55 Routers. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-39780?
CVE-2023-39780 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-39780?
CVE-2023-39780 affects ASUS RT-AX55 Routers. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-39780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39780, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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