CVE-2026-20015

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Summary

CVECVE-2026-20015
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-04 18:16:15 UTC
Updated2026-04-16 20:02:10 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Problem Types: CWE-401 | CWE-401 Missing Release of Memory after Effective Lifetime

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
3.1CNACVSSV3_15.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Adaptive Security Appliance Software All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.1 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.1.3 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.2 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.2.5 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.2.7 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.2.8 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3.39 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3.46 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3.53 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3.55 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.3.56 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.5 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.8 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.22 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.24 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.29 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.34 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.40 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.47 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.50 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.52 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.53 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.18.4.57 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.5 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.9 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.12 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.18 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.22 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.24 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.27 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.28 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.31 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.37 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.38 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.19.1.42 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.1 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.1.5 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.2 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.2.10 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.2.21 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.2.22 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.4 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.7 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.9 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.10 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.13 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.20.3.16 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.22.1.1 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.22.1.3 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.22.1.2 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.22.1.6 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.22.2 Not specified
CNA Cisco Cisco Secure Firewall Adaptive Security Appliance ASA Software affected 9.23.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.0 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.0.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.3 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.4 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.4.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.5 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.5.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.6 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.7 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.5.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.8 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.8.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.9 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.10 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.2.10.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.3.0 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.3.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.3.1.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.3.1.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.0 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.1.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.2.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.2.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.2.3 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.4.2.4 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.6.0 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.6.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.6.2 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.6.2.1 Not specified
CNA Cisco Cisco Secure Firewall Threat Defense FTD Software affected 7.7.0 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd... [email protected] sec.cloudapps.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

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