CVE-2020-3306

HIGH

Cisco ASA & FTD - Unauthenticated DoS via DHCP Packet Processing

Title source: llm
STIX 2.1

Description

A vulnerability in the DHCP module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to incorrect processing of certain DHCP packets. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0023
EPSS Percentile 46.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (3)
cisco/adaptive_security_appliance < 9.6.4.34
cisco/adaptive_security_appliance_software 9.7 - 9.8.4.10
cisco/firepower_threat_defense < 6.3.0.5
Published May 06, 2020
Tracked Since Feb 18, 2026