8.6

CVE-2026-20249

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly.

This vulnerability is due to a logic error during the certificate authentication phase of the IKEv2 connection setup. An attacker could exploit this vulnerability by attempting to establish an IKEv2 VPN connection with a crafted certificate. A successful exploit could allow the attacker to cause the IKEv2 process to crash, causing a denial of service (DoS) condition.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerCisco
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Produkt Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
Default Statusunknown
Version 9.16.1
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Version 9.16.1.28
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Version 9.16.2
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Version 9.16.2.3
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Version 9.16.2.7
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Version 9.16.2.11
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Version 9.16.2.13
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Version 9.16.2.14
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Version 9.16.3.3
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Version 9.16.3
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Version 9.16.3.14
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Version 9.18.1
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Version 9.16.3.15
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Version 9.18.1.3
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Version 9.18.2
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Version 9.16.3.19
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Version 9.16.3.23
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Version 9.18.2.5
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Version 9.16.4
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Version 9.18.2.7
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Version 9.19.1
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Version 9.16.4.9
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Version 9.18.2.8
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Version 9.16.4.14
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Version 9.18.3
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Version 9.19.1.5
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Version 9.16.4.18
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Version 9.19.1.9
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Version 9.18.3.39
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Version 9.16.4.19
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Version 9.19.1.12
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Version 9.18.3.46
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Version 9.16.4.27
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Version 9.19.1.18
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Version 9.18.3.53
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Version 9.18.3.55
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Version 9.16.4.38
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Version 9.16.4.39
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Version 9.18.3.56
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Version 9.20.1
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Version 9.16.4.42
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Version 9.19.1.22
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Version 9.18.4
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Version 9.20.1.5
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Version 9.18.4.5
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Version 9.19.1.24
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Version 9.16.4.48
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Version 9.18.4.8
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Version 9.20.2
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Version 9.19.1.27
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Version 9.16.4.55
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Version 9.18.4.22
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Version 9.20.2.10
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Version 9.16.4.57
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Version 9.19.1.28
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Version 9.18.4.24
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Version 9.20.2.21
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Version 9.16.4.61
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Version 9.19.1.31
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Version 9.18.4.29
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Version 9.20.2.22
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Version 9.16.4.62
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Version 9.18.4.34
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Version 9.20.3
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Version 9.16.4.67
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Version 9.16.4.70
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Version 9.18.4.40
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Version 9.23.1
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Version 9.22.1.1
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Version 9.16.4.71
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Version 9.20.3.4
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Version 9.18.4.47
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Version 9.20.3.7
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Version 9.19.1.37
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Version 9.16.4.76
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Version 9.20.3.9
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Version 9.19.1.38
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Version 9.18.4.50
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Version 9.22.1.3
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Version 9.20.3.10
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Version 9.22.1.2
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Version 9.18.4.52
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Version 9.20.3.13
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Version 9.22.1.6
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Version 9.18.4.53
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Version 9.16.4.82
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Version 9.22.2
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Version 9.20.3.16
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Version 9.19.1.42
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Version 9.18.4.57
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Version 9.16.4.84
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Version 9.23.1.3
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Version 9.20.3.20
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Version 9.22.2.4
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Version 9.23.1.7
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Version 9.20.4
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Version 9.22.2.9
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Version 9.23.1.13
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Version 9.20.4.7
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Version 9.22.2.13
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Version 9.18.4.66
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Version 9.20.4.10
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Version 9.23.1.19
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Version 9.16.4.85
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Version 9.22.2.14
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Version 9.18.4.67
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Version 9.24.1
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Version 9.18.4.68
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Version 9.23.1.22
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Version 9.20.4.14
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Version 9.22.2.20
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Version 9.18.4.71
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Version 9.20.4.19
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Version 9.23.1.26
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Version 9.16.4.89
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Version 9.22.2.32
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Version 9.18.4.76
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Version 9.22.3
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Version 9.24.1.5
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Version 9.20.4.22
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Version 9.24.1.9
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Version 9.20.4.28
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Version 9.16.4.92
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Version 9.18.4.135
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Version 9.23.1.195
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Version 9.20.4.30
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Version 9.24.1.155
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Version 9.23.1.32
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Version 9.18.4.82
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HerstellerCisco
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Produkt Cisco Secure Firewall Threat Defense (FTD) Software
Default Statusunknown
Version 7.0.0
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Version 7.0.0.1
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Version 7.0.1
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Version 7.0.1.1
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Version 7.0.2
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Version 7.2.0
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Version 7.0.2.1
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Version 7.0.3
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Version 7.2.0.1
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Version 7.0.4
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Version 7.2.1
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Version 7.0.5
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Version 7.3.0
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Version 7.2.2
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Version 7.2.3
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Version 7.3.1
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Version 7.2.4
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Version 7.0.6
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Version 7.2.5
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Version 7.2.4.1
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Version 7.3.1.1
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Version 7.4.0
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Version 7.0.6.1
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Version 7.2.5.1
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Version 7.4.1
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Version 7.2.6
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Version 7.0.6.2
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Version 7.4.1.1
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Version 7.2.7
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Version 7.2.5.2
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Version 7.3.1.2
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Version 7.2.8
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Version 7.6.0
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Version 7.4.2
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Version 7.2.8.1
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Version 7.0.6.3
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Version 7.4.2.1
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Version 7.2.9
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Version 7.0.7
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Version 7.7.0
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Version 7.4.2.2
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Version 7.2.10
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Version 7.6.1
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Version 7.4.2.3
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Version 7.0.8
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Version 7.6.2
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Version 7.7.10
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Version 7.7.11
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Version 7.0.8.1
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Version 7.6.2.1
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Version 7.7.10.1
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Version 7.4.2.4
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Version 7.2.10.2
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Version 7.4.3
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Version 7.6.4
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Version 10.0.0
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Version 7.4.4
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Version 7.0.9
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Version 7.2.11
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Version 7.4.7
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VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.4% 0.339
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Cisco PSIRT 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-704 Incorrect Type Conversion or Cast

The product does not correctly convert an object, resource, or structure from one type to a different type.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2cert-dos-uWyc2xtv