CVE-2026-66340

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-08-12. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

The Mira cloud authentication endpoints do not enforce per-account rate limiting, per-IP throttling, or account lockout after repeated failed login attempts. An attacker can use brute-force methods to obtain gain access to user accounts.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 11, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Mira Hormone Monitor, Mira Android App | CISA

Mira Hormone Monitor, Mira Android App | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-223-01

Vendor Advisories for CVE-2026-66340(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 16× in last 7d / 77× 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 107 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66340?
CVE-2026-66340 is a medium vulnerability published on August 11, 2026. The Mira cloud authentication endpoints do not enforce per-account rate limiting, per-IP throttling, or account lockout after repeated failed login attempts. An attacker can use brute-force methods to obtain gain access to user accounts.
When was CVE-2026-66340 disclosed?
CVE-2026-66340 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66340 actively exploited?
CVE-2026-66340 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 83.1% of all scored CVEs.
What is the CVSS score of CVE-2026-66340?
CVE-2026-66340 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-66340?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66340, 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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