CVE-2026-20014 (GCVE-0-2026-20014)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:21 – Updated: 2026-03-04 21:38
VLAI?
Summary
A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, remote attacker with valid VPN user credentials to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network. This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted, authenticated IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust memory, causing the device to reload.
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Affected: 9.18.1
Affected: 9.18.1.3
Affected: 9.18.2
Affected: 9.18.2.5
Affected: 9.18.2.7
Affected: 9.18.2.8
Affected: 9.18.3
Affected: 9.18.3.39
Affected: 9.18.3.46
Affected: 9.18.3.53
Affected: 9.18.3.55
Affected: 9.18.3.56
Affected: 9.18.4
Affected: 9.18.4.5
Affected: 9.18.4.8
Affected: 9.18.4.22
Affected: 9.18.4.24
Affected: 9.18.4.29
Affected: 9.18.4.34
Affected: 9.18.4.40
Affected: 9.18.4.47
Affected: 9.18.4.50
Affected: 9.18.4.52
Affected: 9.18.4.53
Affected: 9.18.4.57
Affected: 9.18.4.66
Affected: 9.18.4.67
Affected: 9.18.4.68
Affected: 9.19.1
Affected: 9.19.1.5
Affected: 9.19.1.9
Affected: 9.19.1.12
Affected: 9.19.1.18
Affected: 9.19.1.22
Affected: 9.19.1.24
Affected: 9.19.1.27
Affected: 9.19.1.28
Affected: 9.19.1.31
Affected: 9.19.1.37
Affected: 9.19.1.38
Affected: 9.19.1.42
Affected: 9.20.1
Affected: 9.20.1.5
Affected: 9.20.2
Affected: 9.20.2.10
Affected: 9.20.2.21
Affected: 9.20.2.22
Affected: 9.20.3
Affected: 9.20.3.4
Affected: 9.20.3.7
Affected: 9.20.3.9
Affected: 9.20.3.10
Affected: 9.20.3.13
Affected: 9.20.3.16
Affected: 9.20.3.20
Affected: 9.20.4
Affected: 9.20.4.7
Affected: 9.22.1.1
Affected: 9.22.1.3
Affected: 9.22.1.2
Affected: 9.22.1.6
Affected: 9.22.2
Affected: 9.22.2.4
Affected: 9.22.2.9
Affected: 9.23.1
Affected: 9.23.1.3
Affected: 9.23.1.7
Affected: 9.23.1.13
Create a notification for this product.
    Cisco Cisco Secure Firewall Threat Defense (FTD) Software Affected: 7.2.0
Affected: 7.2.0.1
Affected: 7.2.1
Affected: 7.2.2
Affected: 7.2.3
Affected: 7.2.4
Affected: 7.2.4.1
Affected: 7.2.5
Affected: 7.2.5.1
Affected: 7.2.6
Affected: 7.2.7
Affected: 7.2.5.2
Affected: 7.2.8
Affected: 7.2.8.1
Affected: 7.2.9
Affected: 7.2.10
Affected: 7.2.10.2
Affected: 7.3.0
Affected: 7.3.1
Affected: 7.3.1.1
Affected: 7.3.1.2
Affected: 7.4.0
Affected: 7.4.1
Affected: 7.4.1.1
Affected: 7.4.2
Affected: 7.4.2.1
Affected: 7.4.2.2
Affected: 7.4.2.3
Affected: 7.4.2.4
Affected: 7.6.0
Affected: 7.6.1
Affected: 7.6.2
Affected: 7.6.2.1
Affected: 7.7.0
Affected: 7.7.10
Affected: 7.7.10.1
Create a notification for this product.
Show details on NVD website

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          "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."
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    "dateReserved": "2025-10-08T11:59:15.351Z",
    "dateUpdated": "2026-03-04T21:38:38.947Z",
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A successful exploit could allow the attacker to exhaust memory, causing the device to reload.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en la caracter\u00edstica IKEv2 de Cisco Secure Firewall ASA Software y Cisco Secure FTD Software podr\u00eda permitir a un atacante remoto autenticado con credenciales de usuario VPN v\u00e1lidas causar una condici\u00f3n de DoS en un dispositivo afectado que tambi\u00e9n podr\u00eda impactar la disponibilidad de los servicios a dispositivos en otras partes de la red. Esta vulnerabilidad se debe al procesamiento incorrecto de paquetes IKEv2. Un atacante podr\u00eda explotar esta vulnerabilidad enviando paquetes IKEv2 manipulados y autenticados a un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante agotar la memoria, provocando que el dispositivo se recargue.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":7.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.12.1\",\"versionEndExcluding\":\"9.16.4.85\",\"matchCriteriaId\":\"74292810-417D-42CC-9123-55166145E91D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.17.1\",\"versionEndExcluding\":\"9.18.4.66\",\"matchCriteriaId\":\"7EFC1809-7619-43ED-80FD-0FC28C876879\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.19.1\",\"versionEndExcluding\":\"9.20.4\",\"matchCriteriaId\":\"4988A136-196A-448B-A416-992803647AB2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.22.1.1\",\"versionEndExcluding\":\"9.22.2.9\",\"matchCriteriaId\":\"FED09C17-AE2F-41DB-AB9F-537E7D22CC22\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.23.1\",\"versionEndExcluding\":\"9.23.1.13\",\"matchCriteriaId\":\"852A0BF4-FF9A-47EE-8E3A-E31C545783F6\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndExcluding\":\"7.0.9\",\"matchCriteriaId\":\"A02019B1-284B-4118-A544-9AA56216E741\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.1.0\",\"versionEndExcluding\":\"7.2.11\",\"matchCriteriaId\":\"3DA98A98-A084-4DB0-B08F-33EB6C8607C0\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20014\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-04T21:38:31.628005Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-04T21:38:35.796Z\"}}], \"cna\": {\"source\": {\"defects\": [\"CSCwq01516\", \"CSCwq50506\"], \"advisory\": \"cisco-sa-asaftd-ikev2-dos-eBueGdEG\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", 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\"affected\", \"version\": \"9.23.1.13\"}]}, {\"vendor\": \"Cisco\", \"product\": \"Cisco Secure Firewall Threat Defense (FTD) Software\", \"versions\": [{\"status\": \"affected\", \"version\": \"7.2.0\"}, {\"status\": \"affected\", \"version\": \"7.2.0.1\"}, {\"status\": \"affected\", \"version\": \"7.2.1\"}, {\"status\": \"affected\", \"version\": \"7.2.2\"}, {\"status\": \"affected\", \"version\": \"7.2.3\"}, {\"status\": \"affected\", \"version\": \"7.2.4\"}, {\"status\": \"affected\", \"version\": \"7.2.4.1\"}, {\"status\": \"affected\", \"version\": \"7.2.5\"}, {\"status\": \"affected\", \"version\": \"7.2.5.1\"}, {\"status\": \"affected\", \"version\": \"7.2.6\"}, {\"status\": \"affected\", \"version\": \"7.2.7\"}, {\"status\": \"affected\", \"version\": \"7.2.5.2\"}, {\"status\": \"affected\", \"version\": \"7.2.8\"}, {\"status\": \"affected\", \"version\": \"7.2.8.1\"}, {\"status\": \"affected\", \"version\": \"7.2.9\"}, {\"status\": \"affected\", \"version\": \"7.2.10\"}, {\"status\": \"affected\", \"version\": \"7.2.10.2\"}, {\"status\": \"affected\", \"version\": \"7.3.0\"}, {\"status\": \"affected\", \"version\": \"7.3.1\"}, {\"status\": \"affected\", \"version\": \"7.3.1.1\"}, {\"status\": \"affected\", \"version\": \"7.3.1.2\"}, {\"status\": \"affected\", \"version\": \"7.4.0\"}, {\"status\": \"affected\", \"version\": \"7.4.1\"}, {\"status\": \"affected\", \"version\": \"7.4.1.1\"}, {\"status\": \"affected\", \"version\": \"7.4.2\"}, {\"status\": \"affected\", \"version\": \"7.4.2.1\"}, {\"status\": \"affected\", \"version\": \"7.4.2.2\"}, {\"status\": \"affected\", \"version\": \"7.4.2.3\"}, {\"status\": \"affected\", \"version\": \"7.4.2.4\"}, {\"status\": \"affected\", \"version\": \"7.6.0\"}, {\"status\": \"affected\", \"version\": \"7.6.1\"}, {\"status\": \"affected\", \"version\": \"7.6.2\"}, {\"status\": \"affected\", \"version\": \"7.6.2.1\"}, {\"status\": \"affected\", \"version\": \"7.7.0\"}, {\"status\": \"affected\", \"version\": \"7.7.10\"}, {\"status\": \"affected\", \"version\": \"7.7.10.1\"}]}], \"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.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG\", \"name\": \"cisco-sa-asaftd-ikev2-dos-eBueGdEG\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, remote attacker with valid VPN user credentials to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network.\\r\\n\\r This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted, authenticated IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust memory, causing the device to reload.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-401\", \"description\": \"Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-03-04T17:21:26.098Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20014\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-04T21:38:38.947Z\", \"dateReserved\": \"2025-10-08T11:59:15.351Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-03-04T17:21:26.098Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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