🛡️ CVE-2024-34083 — aiosmtpd

🟡 CVSS 5.4 — Medium ✅ No Known Exploit CWE-349 NVD
5.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

aiosmtpd STARTTLS unencrypted commands injection

Summary

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 MitM attack.

References

  • [NO STARTTLS: Similar vulnerabilities discovered by previous researchers.](https://nostarttls.secvuln.info/)

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2024-34083 is classified as CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data. The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.

Affected software

CVE-2024-34083 is recorded against 2 packages.

  • aiosmtpd (fixed in 1.4.6)
  • unknown

Timeline and source

Published on 20 May 2024 and last revised on 7 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
nostarttls.secvuln.info (Web)

CVE-2024-34083 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.4
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE CWE-349
Public Exploit ✅ No
Source NVD
Published 2024-05-20
Updated 2026-08-12
Modified 2026-07-07
Fix URL N/A

Affected Packages

Software From version Fixed in
aiosmtpd — 1.4.6
unknown — —

Similar Threats

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