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: 34%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
34%
EPSS %ILE
98%
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 39× in last 7d / 214× 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 434 total refreshes for this CVE.

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

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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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