CVE-2023-43686

MEDIUMPre-NVD 6.26.2—
EchelonGraph scoreMEDIUM confidence

Score 6.2 from GitHub Security Advisory published 2026-06-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.2Exploit: 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). A large number of Firefox preference files can cause the parser to ignore other browser configuration files, leading to a denial of service.

CVSS v3
6.2
EG Score
6.2(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity62% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

CVE-2023-43686 - Malwarebytes, Nebula - Improper Handling of Exceptional Condition

https://www.malwarebytes.com/secure/cves/cve-2023-43686

Vendor Advisories for CVE-2023-43686(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 14× in last 7d / 82× 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 183 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 11:04 UTCEG score recompute
  7. 2026-08-23 11:04 UTCGHSA enrichment
  8. 2026-08-23 00:17 UTCEPSS rescore
  9. 2026-08-21 23:47 UTCEPSS rescore
  10. 2026-08-21 19:42 UTCEG score recompute
  11. 2026-08-21 19:42 UTCGHSA enrichment
  12. 2026-08-20 22:53 UTCEPSS rescore
  13. 2026-08-20 17:25 UTCEG score recompute
  14. 2026-08-20 17:25 UTCGHSA enrichment
  15. 2026-08-19 17:02 UTCEPSS rescore
  16. 2026-08-19 17:02 UTCEPSS rescore
  17. 2026-08-19 15:42 UTCEG score recompute
  18. 2026-08-19 15:42 UTCGHSA enrichment
  19. 2026-08-18 13:46 UTCEPSS rescore
  20. 2026-08-17 13:45 UTCEPSS rescore
  21. 2026-08-17 03:59 UTCEG score recompute
  22. 2026-08-17 03:59 UTCGHSA enrichment
  23. 2026-08-16 14:54 UTCEPSS rescore
  24. 2026-08-16 03:16 UTCEG score recompute
  25. 2026-08-16 03:16 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 02:12 UTCEPSS rescore
  2. 2026-08-15 02:33 UTCEG score recompute
  3. 2026-08-15 02:33 UTCGHSA enrichment
  4. 2026-08-15 01:28 UTCEPSS rescore
  5. 2026-08-15 01:28 UTCEPSS rescore
  6. 2026-08-14 01:51 UTCEG score recompute
  7. 2026-08-14 01:51 UTCGHSA enrichment
  8. 2026-08-13 21:58 UTCEPSS rescore
  9. 2026-08-13 01:08 UTCEG score recompute
  10. 2026-08-13 01:08 UTCGHSA enrichment
  11. 2026-08-12 13:48 UTCEPSS rescore
  12. 2026-08-12 00:26 UTCEG score recompute
  13. 2026-08-12 00:25 UTCGHSA enrichment
  14. 2026-08-11 13:39 UTCEPSS rescore
  15. 2026-08-10 23:41 UTCGHSA enrichment
  16. 2026-08-09 22:58 UTCGHSA enrichment
  17. 2026-08-08 22:16 UTCEG score recompute
  18. 2026-08-08 22:16 UTCGHSA enrichment
  19. 2026-08-08 16:35 UTCEPSS rescore
  20. 2026-08-07 21:32 UTCEG score recompute
  21. 2026-08-07 21:32 UTCGHSA enrichment
  22. 2026-08-07 16:25 UTCEPSS rescore
  23. 2026-08-06 20:50 UTCEG score recompute
  24. 2026-08-06 20:50 UTCGHSA enrichment
  25. 2026-08-06 13:45 UTCEPSS rescore
  26. 2026-08-05 20:07 UTCEG score recompute
  27. 2026-08-05 20:07 UTCGHSA enrichment
  28. 2026-08-05 19:15 UTCEPSS rescore
  29. 2026-08-04 17:01 UTCEG score recompute
  30. 2026-08-04 17:01 UTCGHSA enrichment
  31. 2026-08-04 15:07 UTCEPSS rescore
  32. 2026-08-03 15:58 UTCEG score recompute
  33. 2026-08-03 15:58 UTCGHSA enrichment
  34. 2026-08-03 10:34 UTCEPSS rescore
  35. 2026-08-03 10:34 UTCEPSS rescore
  36. 2026-08-02 15:16 UTCEG score recompute
  37. 2026-08-02 15:16 UTCGHSA enrichment
  38. 2026-08-02 02:25 UTCEPSS rescore
  39. 2026-08-02 02:25 UTCEPSS rescore
  40. 2026-08-01 14:33 UTCEG score recompute
  41. 2026-08-01 14:33 UTCGHSA enrichment
  42. 2026-08-01 04:14 UTCEPSS rescore
  43. 2026-08-01 04:13 UTCEPSS rescore
  44. 2026-07-31 13:50 UTCEG score recompute
  45. 2026-07-31 13:50 UTCGHSA enrichment
  46. 2026-07-30 16:26 UTCEPSS rescore
  47. 2026-07-30 16:26 UTCEPSS rescore
  48. 2026-07-30 11:12 UTCEG score recompute
  49. 2026-07-30 11:12 UTCGHSA enrichment
  50. 2026-07-30 01:28 UTCEPSS rescore
  51. 2026-07-30 01:28 UTCEPSS rescore
  52. 2026-07-29 10:16 UTCEG score recompute
  53. 2026-07-29 10:16 UTCGHSA enrichment
  54. 2026-07-28 15:34 UTCEPSS rescore
  55. 2026-07-28 15:34 UTCEPSS rescore
  56. 2026-07-28 09:33 UTCEG score recompute
  57. 2026-07-28 09:33 UTCGHSA enrichment
  58. 2026-07-27 08:12 UTCEG score recompute
  59. 2026-07-27 08:12 UTCGHSA enrichment
  60. 2026-07-26 05:46 UTCEG score recompute
  61. 2026-07-26 05:45 UTCGHSA enrichment
  62. 2026-07-25 14:16 UTCEPSS rescore
  63. 2026-07-24 14:16 UTCEPSS rescore
  64. 2026-07-23 02:26 UTCEG score recompute
  65. 2026-07-22 23:13 UTCEG score recompute
  66. 2026-07-22 14:06 UTCEPSS rescore
  67. 2026-07-21 15:23 UTCEPSS rescore
  68. 2026-07-21 15:23 UTCEPSS rescore
  69. 2026-07-20 17:06 UTCEPSS rescore
  70. 2026-07-19 14:29 UTCEPSS rescore
  71. 2026-07-18 10:03 UTCEPSS rescore
  72. 2026-07-18 10:03 UTCEPSS rescore
  73. 2026-07-16 17:01 UTCEPSS rescore
  74. 2026-07-16 17:01 UTCEPSS rescore
  75. 2026-07-16 08:56 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-43686?
CVE-2023-43686 is a medium vulnerability published on June 9, 2026. An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). A large number of Firefox preference files can cause the parser to ignore other browser configuration files, leading to a denial of service.
When was CVE-2023-43686 disclosed?
CVE-2023-43686 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-2023-43686 actively exploited?
CVE-2023-43686 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 98.1% of all scored CVEs.
What is the CVSS score of CVE-2023-43686?
CVE-2023-43686 has a CVSS v3.1 base score of 6.2 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2023-43686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43686, 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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