Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability
At a glance
Severity
MEDIUM 5.8
EPSS
EPSS 0.53 % · percentile 45 (2026-10-28)
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Awaiting Analysis
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.
This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.
