A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause the affected device to reload unexpectedly, leading to a denial of service (DoS) condition.
The vulnerability is due to improper error handling on established SSL/TLS connections. An attacker could exploit this vulnerability by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection. A successful exploit could allow the attacker to cause the device to reload.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
References
Configurations
Configuration 1 (hide)
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History
01 Aug 2025, 18:43
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-dos-7uZWwSEy - Vendor Advisory | |
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-bLZw4Ctq - Not Applicable | |
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-rv-routers-xss-K7Z5U6q3 - Not Applicable | |
| CPE | cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.13:*:*:*:*:*:*:* cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.12:*:*:*:*:*:*:* cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1.10:*:*:*:*:*:*:* |
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| First Time |
Cisco
Cisco adaptive Security Appliance Software |
Information
Published : 2024-11-18 16:15
Updated : 2025-08-01 18:43
NVD link : CVE-2020-27124
Mitre link : CVE-2020-27124
CVE.ORG link : CVE-2020-27124
JSON object : View
Products Affected
cisco
- adaptive_security_appliance_software
CWE
CWE-457
Use of Uninitialized Variable