CVE-2023-43688

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 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(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 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 17× 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 246 total refreshes for this CVE.

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

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, with the most recent update on July 23, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 88.0% of all scored CVEs.
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