Cisco Email Security Appliance Denial Of Service Vulnerability
En bref
Sévérité
MEDIUM 5.3
EPSS
EPSS 0.84 % · centile 58 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
cisco
Statut NVD
Analyzed
Description
A vulnerability in the Transport Layer Security (TLS) protocol implementation of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition.
The vulnerability is due to inefficient processing of incoming TLS traffic. An attacker could exploit this vulnerability by sending a series of crafted TLS packets to an affected device. A successful exploit could allow the attacker to trigger a prolonged state of high CPU utilization. The affected device would still be operative, but response time and overall performance may be degraded.There are no workarounds that address this vulnerability.
