CVE-2020-3562

HIGH

Cisco Firepower Threat Defense - Denial of Service via Malformed SSL/TLS Message

Title source: llm
STIX 2.1

Description

A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.

References (1)

Core 1

Scores

CVSS v3 8.6
EPSS 0.0088
EPSS Percentile 75.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-119
Status published
Products (3)
cisco/firepower_threat_defense 6.3.0
cisco/firepower_threat_defense 6.4.0
cisco/firepower_threat_defense 6.5.0
Published Oct 21, 2020
Tracked Since Feb 18, 2026