CVE-2023-43688

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). There is a Heap buffer overflow in various buffer encryption utilities.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
12.1%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 9, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
No patch confirmed yet.
generic

CVE-2023-43688 - Malwarebytes, Nebula - Buffer overflows

https://www.malwarebytes.com/secure/cves/cve-2023-43688

Vendor Advisories for CVE-2023-43688(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 28× in last 7d / 133× 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 133 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-43688?
CVE-2023-43688 is a high vulnerability published on June 9, 2026. An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). There is a Heap buffer overflow in various buffer encryption utilities.
When was CVE-2023-43688 disclosed?
CVE-2023-43688 was first published in the National Vulnerability Database on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-43688 actively exploited?
CVE-2023-43688 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-43688?
CVE-2023-43688 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2023-43688?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43688, 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

Explore the affected products and dependency analysis for CVE-2023-43688

Explore →

Is Your Infrastructure Affected by CVE-2023-43688?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs