CVSS 3.1 Score 5.3 of 10 (medium)


Published Mar 12, 2024
Updated: Mar 13, 2024
CWE ID 345


CVE-2024-27305 is a vulnerability in the aiosmtpd software, a reimplementation of the Python stdlib based on asyncio. This vulnerability allows for inbound SMTP smuggling, which is an exploitation of interpretation differences in the SMTP protocol. By exploiting this vulnerability, an attacker can send smuggled or spoofed emails with fake sender addresses, potentially enabling advanced phishing attacks. The issue also exists in other SMTP software like Postfix. The vulnerability has been addressed in version 1.4.5 of aiosmtpd, and users are advised to upgrade to this version as there are no known workarounds. The potential danger posed by this vulnerability to organizations is medium, with a base severity score of 5.3 out of 10 and low integrity impact.

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