CVE-2025-66280

HIGHNVD 7.27.2
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory published 2026-06-10. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

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

An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to compromise the security of the system.

We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity72% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2025-66280(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 78× 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 134 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-66280?
CVE-2025-66280 is a high vulnerability published on June 10, 2026. An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the…
When was CVE-2025-66280 disclosed?
CVE-2025-66280 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-66280 actively exploited?
CVE-2025-66280 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.3% of all scored CVEs.
What is the CVSS score of CVE-2025-66280?
CVE-2025-66280 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2025-66280?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-66280, 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.

Dependency Blast Radius

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