CVE-2026-9509

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 73% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.7Exploit: NoneExposed: 0

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

An unhandled exception in Suprema BioStar 2 (Server), versions 2.9.8, 2.9.10, and 2.9.11, that allows an unauthenticated remote attacker to cause a denial of service (DoS) by sending HTTP POST requests to the ‘/api/migration’ endpoint. This request triggers a failure that halts critical processes, leaving the system offline until the services or server are manually restarted. As a result, access control readers cease to function, and potential failures may occur in third-party integrations. Since the exploit requires no privileges or user interaction and is trivial to automate, the impact on availability is high, and the effect extends to interconnected systems.

CVSS v3
8.7
EG Score
8.7(medium)
EPSS
27.3%
KEV
Not listed

Published

May 29, 2026

Last Modified

May 29, 2026

Advisory Details (1)

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

Multiple vulnerabilities in Suprema's BioStar | INCIBE-CERT | INCIBE

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-supremas-biostar

Vendor Advisories for CVE-2026-9509(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 73× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9509?
CVE-2026-9509 is a high vulnerability published on May 29, 2026. An unhandled exception in Suprema BioStar 2 (Server), versions 2.9.8, 2.9.10, and 2.9.11, that allows an unauthenticated remote attacker to cause a denial of service (DoS) by sending HTTP POST requests to the ‘/api/migration’ endpoint. This request triggers a failure that halts critical processes,…
When was CVE-2026-9509 disclosed?
CVE-2026-9509 was first published in the National Vulnerability Database on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9509 actively exploited?
CVE-2026-9509 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9509?
CVE-2026-9509 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-9509?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9509, 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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