CVE-2020-3283

high Cisco
CVSS v3 Base Score
8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score
2.0%
Exploitation probability in 30 days
Top 22% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: May 6, 2020 (2314 days ago)
Last Modified: August 11, 2026
Vendor: Cisco
Source: NVD

Description

A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Firepower Threat Defense (FTD) Software when running on the Cisco Firepower 1000 Series platform could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to a communication error between internal functions. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause a buffer underrun, which leads to a crash. The crash causes the affected device to reload.

CWE

CWE-119

Affected Products

cisco secure firewall threat defensecisco asa 5505 firmwarecisco asa 5510 firmwarecisco asa 5512-x firmwarecisco asa 5515-x firmwarecisco asa 5520 firmwarecisco asa 5525-x firmwarecisco asa 5540 firmwarecisco asa 5545-x firmwarecisco asa 5550 firmware

References