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CVE-2026-40215

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7a422008fdbd33281e1cff7d2152c664341713756d5b1443a67aefc1d00ebf25
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-416","description":"CWE-416 Use after free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"OpenVPN","vendor":"OpenVPN","versions":[{"lessThanOrEqual":"2.6.19","status":"affected","version":"2.6.0","versionType":"semver"},{"lessThanOrEqual":"2.7.1","status":"affected","version":"2.7_alpha1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-416","description":"CWE-416 Use after free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"tags":["release-notes"],"url":"https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/references/2
{"tags":["release-notes"],"url":"https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /containers/cna/references/1
{"tags":["vendor-advisory"],"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-40215"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c784f6899a18fa8429b1d18337a98b6d170704b406e940cd458d6b2622c883b2 · sha256:19c62babe28f0ceb… · /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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