CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-20015

A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may impact the availability of services to devices elsewhere in the network. This vulnerability is due to a memory leak when parsing IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to be manually reloaded.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 32.7%

CVSS Severity

CVSS v3 Score 5.8

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG

Products affected by CVE-2026-20015

Cisco » Firepower Threat Defense Software » Version: Any

cpe:2.3:a:cisco:firepower_threat_defense_software:*
Cisco » Firepower Threat Defense Software » Version: 7.2.0

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0
Cisco » Firepower Threat Defense Software » Version: 7.2.0.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0.1
Cisco » Firepower Threat Defense Software » Version: 7.2.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.1
Cisco » Firepower Threat Defense Software » Version: 7.2.2

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.2
Cisco » Firepower Threat Defense Software » Version: 7.2.3

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.3
Cisco » Firepower Threat Defense Software » Version: 7.2.4

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4
Cisco » Firepower Threat Defense Software » Version: 7.2.4.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4.1
Cisco » Firepower Threat Defense Software » Version: 7.2.5

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5
Cisco » Firepower Threat Defense Software » Version: 7.2.5.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.1
Cisco » Firepower Threat Defense Software » Version: 7.2.5.2

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.2
Cisco » Firepower Threat Defense Software » Version: 7.2.6

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.6
Cisco » Firepower Threat Defense Software » Version: 7.2.7

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.7
Cisco » Firepower Threat Defense Software » Version: 7.2.8

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8
Cisco » Firepower Threat Defense Software » Version: 7.2.8.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8.1
Cisco » Firepower Threat Defense Software » Version: 7.3.0

cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.0
Cisco » Firepower Threat Defense Software » Version: 7.3.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1
Cisco » Firepower Threat Defense Software » Version: 7.3.1.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.1
Cisco » Firepower Threat Defense Software » Version: 7.3.1.2

cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.2
Cisco » Firepower Threat Defense Software » Version: 7.4.0

cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.0
Cisco » Firepower Threat Defense Software » Version: 7.4.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1
Cisco » Firepower Threat Defense Software » Version: 7.4.1.1

cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1.1
Cisco » Firepower Threat Defense Software » Version: 7.4.2

cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2
Cisco » Adaptive Security Appliance Software » Version: 9.18.1

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1
Cisco » Adaptive Security Appliance Software » Version: 9.18.1.3

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1.3
Cisco » Adaptive Security Appliance Software » Version: 9.18.2

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2
Cisco » Adaptive Security Appliance Software » Version: 9.18.2.5

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.5
Cisco » Adaptive Security Appliance Software » Version: 9.18.2.7

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.7
Cisco » Adaptive Security Appliance Software » Version: 9.18.2.8

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.8
Cisco » Adaptive Security Appliance Software » Version: 9.18.3

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3
Cisco » Adaptive Security Appliance Software » Version: 9.18.3.39

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.39
Cisco » Adaptive Security Appliance Software » Version: 9.18.3.46

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.46
Cisco » Adaptive Security Appliance Software » Version: 9.18.3.53

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.53
Cisco » Adaptive Security Appliance Software » Version: 9.18.3.55

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.55
Cisco » Adaptive Security Appliance Software » Version: 9.18.3.56

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.56
Cisco » Adaptive Security Appliance Software » Version: 9.18.4

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.22

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.22
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.24

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.24
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.29

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.29
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.34

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.34
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.40

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.40
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.47

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.47
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.5

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.5
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.57

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.57
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.67

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.67
Cisco » Adaptive Security Appliance Software » Version: 9.18.4.8

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.4.8
Cisco » Adaptive Security Appliance Software » Version: 9.19.1

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.12

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.12
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.18

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.18
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.22

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.22
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.24

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.24
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.27

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.27
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.28

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.28
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.31

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.31
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.37

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.37
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.42

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.42
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.5

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.5
Cisco » Adaptive Security Appliance Software » Version: 9.19.1.9

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1.9
Cisco » Adaptive Security Appliance Software » Version: 9.20

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20
Cisco » Adaptive Security Appliance Software » Version: 9.20.1

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.1
Cisco » Adaptive Security Appliance Software » Version: 9.20.1.5

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.1.5
Cisco » Adaptive Security Appliance Software » Version: 9.20.2

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.2
Cisco » Adaptive Security Appliance Software » Version: 9.20.2.10

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.2.10
Cisco » Adaptive Security Appliance Software » Version: 9.20.2.21

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.2.21
Cisco » Adaptive Security Appliance Software » Version: 9.20.2.22

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.2.22
Cisco » Adaptive Security Appliance Software » Version: 9.20.3

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.3
Cisco » Adaptive Security Appliance Software » Version: 9.20.3.16

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.3.16
Cisco » Adaptive Security Appliance Software » Version: 9.20.3.4

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.3.4
Cisco » Adaptive Security Appliance Software » Version: 9.20.3.7

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.20.3.7
Cisco » Adaptive Security Appliance Software » Version: 9.22.1.1

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.22.1.1
Cisco » Adaptive Security Appliance Software » Version: 9.22.1.3

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.22.1.3
Cisco » Adaptive Security Appliance Software » Version: 9.22.2

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.22.2
Cisco » Adaptive Security Appliance Software » Version: 9.23.1.3

cpe:2.3:o:cisco:adaptive_security_appliance_software:9.23.1.3

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-20015

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