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CVE-2026-20100

A vulnerability in the LUA interperter of the Remote Access SSL VPN feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker with a valid VPN connection to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This does not affect the management or MUS interfaces. This vulnerability is due to trusting user input without validation in the LUA i
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c70b33b3fcc9ab6b8b66f14266efe19e173dcb5c4f7c9dde932aed7f23366fbd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"Cisco Secure Firewall Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"status":"affected","version":"9.12.1"},{"status":"affected","version":"9.12.1.2"},{"status":"affected","version":"9.12.1.3"},{"status":"affected","version":"9.12.2"},{"status":"affected","version":"9.12.2.4"},{"status":"affected","version":"9.12.2.5"},{"status":"affected","version":"9.12.2.9"},{"status":"affected","version":"9.12.3"},{"status":"affected","version":"9.12.3.2"},{"status":"affected","version":"9.12.3.7"},{"status":"affected","version":"9.12.4"},{"status":"affected","versio…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/affected/0

{"product":"Cisco Secure Firewall Threat Defense (FTD) Software","vendor":"Cisco","versions":[{"status":"affected","version":"6.4.0"},{"status":"affected","version":"6.4.0.1"},{"status":"affected","version":"6.4.0.3"},{"status":"affected","version":"6.4.0.2"},{"status":"affected","version":"6.4.0.4"},{"status":"affected","version":"6.4.0.5"},{"status":"affected","version":"6.4.0.6"},{"status":"affected","version":"6.4.0.7"},{"status":"affected","version":"6.4.0.8"},{"status":"affected","version":"6.4.0.9"},{"status":"affected","version":"6.4.0.10"},{"status":"affected","version":"6.4.0.11"},{"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"Cisco Secure Firewall Adaptive Security Appliance (ASA) Software","vendor":"Cisco","versions":[{"status":"affected","version":"9.12.1"},{"status":"affected","version":"9.12.1.2"},{"status":"affected","version":"9.12.1.3"},{"status":"affected","version":"9.12.2"},{"status":"affected","version":"9.12.2.4"},{"status":"affected","version":"9.12.2.5"},{"status":"affected","version":"9.12.2.9"},{"status":"affected","version":"9.12.3"},{"status":"affected","version":"9.12.3.2"},{"status":"affected","version":"9.12.3.7"},{"status":"affected","version":"9.12.4"},{"status":"affected","versio…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/affected/0
{"product":"Cisco Secure Firewall Threat Defense (FTD) Software","vendor":"Cisco","versions":[{"status":"affected","version":"6.4.0"},{"status":"affected","version":"6.4.0.1"},{"status":"affected","version":"6.4.0.3"},{"status":"affected","version":"6.4.0.2"},{"status":"affected","version":"6.4.0.4"},{"status":"affected","version":"6.4.0.5"},{"status":"affected","version":"6.4.0.6"},{"status":"affected","version":"6.4.0.7"},{"status":"affected","version":"6.4.0.8"},{"status":"affected","version":"6.4.0.9"},{"status":"affected","version":"6.4.0.10"},{"status":"affected","version":"6.4.0.11"},{"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/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:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"cwe"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"cisco-sa-asaftd-vpn-m9sx6MbC","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-m9sx6MbC"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:30c689a1151336c955969f8836ceafbbc663a4cc3f0c127430670182b4c6d3a9 · sha256:f8b0bf28b844a5da… · /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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