CVE-2026-66661

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. a secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

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

Subscriber Privilege Escalation in Directories Pro <= 2.0.5 versions.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

References (1)

Vendor Advisories for CVE-2026-66661(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 24× in last 7d / 104× 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 142 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66661?
CVE-2026-66661 is a high vulnerability published on August 13, 2026. Subscriber Privilege Escalation in Directories Pro <= 2.0.5 versions.
When was CVE-2026-66661 disclosed?
CVE-2026-66661 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66661 actively exploited?
CVE-2026-66661 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 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-66661?
CVE-2026-66661 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-66661?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66661, 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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