{"api_version":"1","generated_at":"2026-04-23T01:00:01+00:00","cve":"CVE-2026-20015","urls":{"html":"https://cve.report/CVE-2026-20015","api":"https://cve.report/api/cve/CVE-2026-20015.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-20015","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20015"},"summary":{"title":"CVE-2026-20015","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.\r\n\r 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.","state":"PUBLISHED","assigner":"cisco","published_at":"2026-03-04 18:16:15","updated_at":"2026-04-16 20:02:10"},"problem_types":["CWE-401","CWE-401 Missing Release of Memory after Effective 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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.\r\n\r 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."}],"exploits":[{"lang":"en","value":"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"format":"cvssV3_1"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","description":"Missing Release of Memory after Effective Lifetime","lang":"en","type":"cwe"}]}],"providerMetadata":{"dateUpdated":"2026-03-04T17:21:37.336Z","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco"},"references":[{"name":"cisco-sa-asaftd-ikev2-dos-eBueGdEG","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG"}],"source":{"advisory":"cisco-sa-asaftd-ikev2-dos-eBueGdEG","defects":["CSCwo49926"],"discovery":"INTERNAL"}}},"cveMetadata":{"assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","assignerShortName":"cisco","cveId":"CVE-2026-20015","datePublished":"2026-03-04T17:21:37.336Z","dateReserved":"2025-10-08T11:59:15.351Z","dateUpdated":"2026-03-04T21:38:16.098Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-04 18:16:15","lastModifiedDate":"2026-04-16 20:02:10","problem_types":["CWE-401","CWE-401 Missing Release of Memory after Effective Lifetime"],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","baseScore":5.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.18.1","versionEndExcluding":"9.18.4.71","matchCriteriaId":"3341FE77-F3C2-4CCE-9CAE-4628BBEFA0D3"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.19.1","versionEndExcluding":"9.20.4.10","matchCriteriaId":"CE667ABD-2044-4C1E-9B75-4AD23BFF82FC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.22.1.1","versionEndExcluding":"9.22.2.13","matchCriteriaId":"6023A38F-7A2D-4DFA-A44A-EBE014EB265F"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.23.1","versionEndExcluding":"9.23.1.19","matchCriteriaId":"FD31C3DC-9DE7-4845-BDC9-9AA38F6D3B64"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2.0","versionEndExcluding":"7.2.11","matchCriteriaId":"E9751FAD-D226-4FE9-BB2E-4ECEDAD95853"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3.0","versionEndExcluding":"7.4.3","matchCriteriaId":"737DB8CE-EC0B-4221-A8BF-3E64702DE092"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.6.0","versionEndExcluding":"7.6.4","matchCriteriaId":"26A29A1A-8013-4CE1-8DE5-4C82778A1D96"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.7.0","versionEndExcluding":"7.7.11","matchCriteriaId":"A267F3D1-7449-4622-91AB-F9CA2DDDB61E"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"20015","Ordinal":"1","Title":"CVE-2026-20015","CVE":"CVE-2026-20015","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"20015","Ordinal":"1","NoteData":"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.\r\n\r 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.","Type":"Description","Title":"CVE-2026-20015"}]}}}