CVE-2021-34792
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
1.4%
Exploitation probability in 30 days
Top 30% 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: October 27, 2021 (1775 days ago)
Last Modified: August 11, 2026
Vendor: Cisco
Source: NVD
Vulnerability Report
Generated by CyberWatcher
Description
A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
CWE
CWE-400Affected Products
cisco secure firewall threat defensecisco adaptive security appliance softwarecisco asa 5512-x firmwarecisco asa 5505 firmwarecisco asa 5515-x firmwarecisco asa 5525-x firmwarecisco asa 5545-x firmwarecisco asa 5555-x firmwarecisco asa 5580 firmwarecisco asa 5585-x firmware