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CVE-2026-20012

A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fd697146f649acab480cc5ef7d44fc1669497a92bcbc092c5cf411abd487e02b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"product":"IOS","vendor":"Cisco","versions":[{"status":"affected","version":"15.2(1)S"},{"status":"affected","version":"15.2(2)S"},{"status":"affected","version":"15.2(1)S1"},{"status":"affected","version":"15.2(4)S"},{"status":"affected","version":"15.2(1)S2"},{"status":"affected","version":"15.2(2)S1"},{"status":"affected","version":"15.2(2)S2"},{"status":"affected","version":"15.2(2)S0a"},{"status":"affected","version":"15.2(2)S0c"},{"status":"affected","version":"15.2(4)S1"},{"status":"affected","version":"15.2(4)S4"},{"status":"affected","version":"15.2(4)S6"},{"status":"affected","versi…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/0

{"product":"Cisco Secure Firewall Threat Defense (FTD) Software","vendor":"Cisco","versions":[{"status":"affected","version":"6.2.3"},{"status":"affected","version":"6.2.3.1"},{"status":"affected","version":"6.2.3.2"},{"status":"affected","version":"6.2.3.3"},{"status":"affected","version":"6.2.3.4"},{"status":"affected","version":"6.2.3.5"},{"status":"affected","version":"6.2.3.6"},{"status":"affected","version":"6.2.3.7"},{"status":"affected","version":"6.2.3.8"},{"status":"affected","version":"6.2.3.10"},{"status":"affected","version":"6.2.3.11"},{"status":"affected","version":"6.2.3.9"},{"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/3

{"product":"Cisco IOS XE Software","vendor":"Cisco","versions":[{"status":"affected","version":"3.5.0E"},{"status":"affected","version":"3.5.1E"},{"status":"affected","version":"3.5.2E"},{"status":"affected","version":"3.5.3E"},{"status":"affected","version":"3.11.1S"},{"status":"affected","version":"3.11.2S"},{"status":"affected","version":"3.11.0S"},{"status":"affected","version":"3.11.3S"},{"status":"affected","version":"3.11.4S"},{"status":"affected","version":"3.12.0S"},{"status":"affected","version":"3.12.1S"},{"status":"affected","version":"3.12.2S"},{"status":"affected","version":"3.12…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/2

{"product":"Cisco Secure Firewall Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"status":"affected","version":"9.8.1"},{"status":"affected","version":"9.8.1.5"},{"status":"affected","version":"9.8.1.7"},{"status":"affected","version":"9.8.2"},{"status":"affected","version":"9.8.2.8"},{"status":"affected","version":"9.8.2.14"},{"status":"affected","version":"9.8.2.15"},{"status":"affected","version":"9.8.2.17"},{"status":"affected","version":"9.8.2.20"},{"status":"affected","version":"9.8.2.24"},{"status":"affected","version":"9.8.2.26"},{"status":"affected","version…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/1

Affected products and versions

4 source assertions
{"product":"IOS","vendor":"Cisco","versions":[{"status":"affected","version":"15.2(1)S"},{"status":"affected","version":"15.2(2)S"},{"status":"affected","version":"15.2(1)S1"},{"status":"affected","version":"15.2(4)S"},{"status":"affected","version":"15.2(1)S2"},{"status":"affected","version":"15.2(2)S1"},{"status":"affected","version":"15.2(2)S2"},{"status":"affected","version":"15.2(2)S0a"},{"status":"affected","version":"15.2(2)S0c"},{"status":"affected","version":"15.2(4)S1"},{"status":"affected","version":"15.2(4)S4"},{"status":"affected","version":"15.2(4)S6"},{"status":"affected","versi…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/0
{"product":"Cisco Secure Firewall Threat Defense (FTD) Software","vendor":"Cisco","versions":[{"status":"affected","version":"6.2.3"},{"status":"affected","version":"6.2.3.1"},{"status":"affected","version":"6.2.3.2"},{"status":"affected","version":"6.2.3.3"},{"status":"affected","version":"6.2.3.4"},{"status":"affected","version":"6.2.3.5"},{"status":"affected","version":"6.2.3.6"},{"status":"affected","version":"6.2.3.7"},{"status":"affected","version":"6.2.3.8"},{"status":"affected","version":"6.2.3.10"},{"status":"affected","version":"6.2.3.11"},{"status":"affected","version":"6.2.3.9"},{"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/3
{"product":"Cisco IOS XE Software","vendor":"Cisco","versions":[{"status":"affected","version":"3.5.0E"},{"status":"affected","version":"3.5.1E"},{"status":"affected","version":"3.5.2E"},{"status":"affected","version":"3.5.3E"},{"status":"affected","version":"3.11.1S"},{"status":"affected","version":"3.11.2S"},{"status":"affected","version":"3.11.0S"},{"status":"affected","version":"3.11.3S"},{"status":"affected","version":"3.11.4S"},{"status":"affected","version":"3.12.0S"},{"status":"affected","version":"3.12.1S"},{"status":"affected","version":"3.12.2S"},{"status":"affected","version":"3.12…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/2
{"product":"Cisco Secure Firewall Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"status":"affected","version":"9.8.1"},{"status":"affected","version":"9.8.1.5"},{"status":"affected","version":"9.8.1.7"},{"status":"affected","version":"9.8.2"},{"status":"affected","version":"9.8.2.8"},{"status":"affected","version":"9.8.2.14"},{"status":"affected","version":"9.8.2.15"},{"status":"affected","version":"9.8.2.17"},{"status":"affected","version":"9.8.2.20"},{"status":"affected","version":"9.8.2.24"},{"status":"affected","version":"9.8.2.26"},{"status":"affected","version…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.6,"baseSeverity":"HIGH","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:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-401","description":"Missing Release of Memory after Effective Lifetime","lang":"en","type":"cwe"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"cisco-sa-asa-ftd-ios-dos-kPEpQGGK","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-kPEpQGGK"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a14a4f7d0c5e732bc8663714a9ccdca80ed40bd98df2bfbb9b5de697c4f1a43c · sha256:72c8824e59126980… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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