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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software affected
Version Status Constraints
9.18.1 affected
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9.18.1.3 affected
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9.18.2 affected
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9.18.2.5 affected
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9.18.2.7 affected
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9.18.2.8 affected
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9.18.3 affected
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9.18.3.39 affected
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9.18.3.46 affected
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9.18.3.53 affected
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9.18.3.55 affected
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9.18.3.56 affected
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9.18.4 affected
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9.18.4.5 affected
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9.18.4.8 affected
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9.18.4.22 affected
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9.18.4.24 affected
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9.18.4.29 affected
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9.18.4.34 affected
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9.18.4.40 affected
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9.18.4.47 affected
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9.18.4.50 affected
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9.18.4.52 affected
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9.18.4.53 affected
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9.18.4.57 affected
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9.19.1 affected
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9.19.1.5 affected
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9.19.1.9 affected
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9.19.1.12 affected
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9.19.1.18 affected
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9.19.1.22 affected
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9.19.1.24 affected
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9.19.1.27 affected
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9.19.1.28 affected
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9.19.1.31 affected
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9.19.1.37 affected
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9.19.1.38 affected
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9.19.1.42 affected
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9.20.1 affected
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9.20.1.5 affected
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9.20.2 affected
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9.20.2.10 affected
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9.20.2.21 affected
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9.20.2.22 affected
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9.20.3 affected
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9.20.3.4 affected
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9.20.3.7 affected
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9.20.3.9 affected
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9.20.3.10 affected
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9.20.3.13 affected
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9.20.3.16 affected
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9.22.1.1 affected
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9.22.1.3 affected
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9.22.1.2 affected
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9.22.1.6 affected
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9.22.2 affected
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9.23.1 affected
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Cisco Cisco Secure Firewall Threat Defense (FTD) Software affected
Version Status Constraints
7.2.0 affected
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7.2.0.1 affected
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7.2.1 affected
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7.2.2 affected
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7.2.3 affected
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7.2.4 affected
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7.2.4.1 affected
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7.2.5 affected
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7.2.5.1 affected
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7.2.6 affected
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7.2.7 affected
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7.2.5.2 affected
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7.2.8 affected
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7.2.8.1 affected
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7.2.9 affected
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7.2.10 affected
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7.2.10.2 affected
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7.3.0 affected
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7.3.1 affected
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7.3.1.1 affected
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7.3.1.2 affected
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7.4.0 affected
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7.4.1 affected
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7.4.1.1 affected
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7.4.2 affected
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7.4.2.1 affected
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7.4.2.2 affected
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7.4.2.3 affected
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7.4.2.4 affected
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7.6.0 affected
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7.6.1 affected
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7.6.2 affected
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7.6.2.1 affected
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7.7.0 affected
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No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG cve-icon cve-icon
History

Wed, 04 Mar 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 04 Mar 2026 17:30:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-401
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-03-04T21:38:16.098Z

Reserved: 2025-10-08T11:59:15.351Z

Link: CVE-2026-20015

cve-icon Vulnrichment

Updated: 2026-03-04T21:38:12.576Z

cve-icon NVD

Status : Received

Published: 2026-03-04T18:16:15.853

Modified: 2026-03-04T18:16:15.853

Link: CVE-2026-20015

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses