CVE-2024-34083

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 77% 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, nvd
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a man-in-the-middle attack. Version 1.4.6 contains a patch for the issue.

CVSS v3
5.4
EG Score
5.4(medium)
EPSS
13.5%
KEV
Not listed

Published

May 18, 2024

Last Modified

April 15, 2026

References (6)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
aiosmtpd1.0 ... 1.4.5 (25 versions)1.4.6—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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.

  1. 2026-07-11 08:26 UTCEPSS rescore
  2. 2026-07-11 08:26 UTCEPSS rescore
  3. 2026-07-11 05:41 UTCOSV refresh
  4. 2026-07-09 19:09 UTCEPSS rescore
  5. 2026-07-08 15:14 UTCEPSS rescore
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  7. 2026-07-07 13:45 UTCEPSS rescore
  8. 2026-07-06 16:26 UTCEPSS rescore
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  11. 2026-07-05 02:29 UTCEPSS rescore
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  14. 2026-06-30 23:21 UTCEPSS rescore
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  16. 2026-06-29 14:05 UTCEPSS rescore
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  19. 2026-06-28 04:55 UTCEPSS rescore
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  21. 2026-06-27 03:07 UTCEPSS rescore
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  23. 2026-06-25 13:49 UTCEPSS rescore
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  1. 2026-06-23 21:32 UTCEPSS rescore
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  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-22 12:26 UTCOSV refresh
  6. 2026-06-21 14:55 UTCEPSS rescore
  7. 2026-06-21 14:55 UTCEPSS rescore
  8. 2026-06-21 01:58 UTCEPSS rescore
  9. 2026-06-21 01:58 UTCEPSS rescore
  10. 2026-06-19 19:25 UTCEPSS rescore
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  12. 2026-06-18 17:52 UTCEPSS rescore
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  17. 2026-06-15 17:47 UTCEPSS rescore
  18. 2026-06-14 23:16 UTCEPSS rescore
  19. 2026-06-13 22:59 UTCEPSS rescore
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  21. 2026-06-12 23:11 UTCEPSS rescore
  22. 2026-06-11 13:59 UTCEPSS rescore
  23. 2026-06-10 22:17 UTCEPSS rescore
  24. 2026-06-10 13:21 UTCEPSS rescore
  25. 2026-06-08 14:16 UTCEPSS rescore
  26. 2026-06-07 15:24 UTCEPSS rescore
  27. 2026-06-07 15:24 UTCEPSS rescore
  28. 2026-06-06 13:46 UTCEPSS rescore
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  30. 2026-06-05 22:46 UTCEPSS rescore
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  32. 2026-06-05 06:09 UTCEPSS rescore
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  34. 2026-06-04 19:09 UTCOSV refresh
  35. 2026-06-04 13:11 UTCEPSS rescore
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  37. 2026-06-02 20:12 UTCEPSS rescore
  38. 2026-06-01 13:51 UTCEPSS rescore
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  40. 2026-05-31 22:30 UTCEPSS rescore
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  42. 2026-05-29 13:43 UTCEPSS rescore
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  44. 2026-05-28 13:44 UTCEPSS rescore
  45. 2026-05-28 13:44 UTCEPSS rescore
  46. 2026-05-28 13:44 UTCEPSS rescore
  47. 2026-05-27 13:40 UTCEPSS rescore
  48. 2026-05-27 13:40 UTCEPSS rescore
  49. 2026-05-26 13:43 UTCEPSS rescore
  50. 2026-05-26 13:43 UTCEPSS rescore
  51. 2026-05-26 07:18 UTCEPSS rescore
  52. 2026-05-26 07:18 UTCEPSS rescore
  53. 2026-05-23 00:10 UTCEG score recompute
  54. 2026-05-22 21:16 UTCEPSS rescore
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  57. 2026-05-22 21:16 UTCEPSS rescore
  58. 2026-05-22 01:43 UTCEG score recompute
  59. 2026-05-21 22:42 UTCEPSS rescore
  60. 2026-05-20 22:37 UTCEPSS rescore
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  65. 2026-05-20 11:21 UTCEPSS rescore
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  70. 2026-05-18 21:30 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2024-34083?
CVE-2024-34083 is a medium vulnerability published on May 18, 2024. aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a man-in-the-middle…
When was CVE-2024-34083 disclosed?
CVE-2024-34083 was first published in the National Vulnerability Database on May 18, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-34083 actively exploited?
CVE-2024-34083 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-34083?
CVE-2024-34083 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2024-34083?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-34083, 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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