Description
A vulnerability in SSL/TLS message handler for 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 an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-4ygzLKU9
Scores
CVSS v3
8.6
EPSS
0.0041
EPSS Percentile
61.4%
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
CWE-400
Status
published
Products (19)
cisco/adaptive_security_appliance
< 9.8.4.40
cisco/adaptive_security_appliance_software
9.9.0 - 9.12.4.26
cisco/asa_5505_firmware
009.009\(002.085\)
cisco/asa_5505_firmware
009.014\(002.106\)
cisco/asa_5512-x_firmware
009.009\(002.085\)
cisco/asa_5512-x_firmware
009.014\(002.106\)
cisco/asa_5515-x_firmware
009.009\(002.085\)
cisco/asa_5515-x_firmware
009.014\(002.106\)
cisco/asa_5525-x_firmware
009.009\(002.085\)
cisco/asa_5525-x_firmware
009.014\(002.106\)
... and 9 more
Published
Oct 27, 2021
Tracked Since
Feb 18, 2026