Cisco Secure Firewall Threat Defense Software Snort 3 Memory Management Denial of Service Vulnerability
At a glance
Severity
MEDIUM 5.8
EPSS
EPSS 0.44 % · percentile 38 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Analyzed
Description
A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.
This vulnerability is due to a logic error in memory management when a device is performing Snort 3 SSL packet inspection. An attacker could exploit this vulnerability by sending crafted SSL packets through an established connection to be parsed by the Snort 3 Detection Engine. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.
