CVE-2026-64639

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 72% 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, secondary
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller) to execute arbitrary code on behalf of the database server administrator.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 12, 2026

Last Modified

September 3, 2026

References (1)

Vendor Advisories for CVE-2026-64639(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 46× in last 7d / 207× 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 284 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-64639?
CVE-2026-64639 is a critical vulnerability published on August 12, 2026. Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller) to execute arbitrary code on behalf of the database server administrator.
When was CVE-2026-64639 disclosed?
CVE-2026-64639 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64639 actively exploited?
CVE-2026-64639 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 71.7% of all scored CVEs.
What is the CVSS score of CVE-2026-64639?
CVE-2026-64639 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-64639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64639, 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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