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CVE-2026-40947

Yubico libfido2 before 1.17.0, python-fido2 before 2.2.0, and yubikey-manager before 5.9.1 have an unintended DLL search path.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7f82206924db8af6a73e973d581cc4d30ca98063d10c746c11ecdae2fa5ace66
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"unaffected","platforms":["Windows"],"product":"python-fido2","vendor":"Yubico","versions":[{"lessThan":"2.2.0","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/1

{"defaultStatus":"unaffected","platforms":["Windows"],"product":"libfido2","vendor":"Yubico","versions":[{"lessThan":"1.17.0","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/0

{"defaultStatus":"unaffected","platforms":["Windows"],"product":"yubikey-manager","vendor":"Yubico","versions":[{"lessThan":"5.9.1","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/2

Affected products and versions

3 source assertions
{"defaultStatus":"unaffected","platforms":["Windows"],"product":"python-fido2","vendor":"Yubico","versions":[{"lessThan":"2.2.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/1
{"defaultStatus":"unaffected","platforms":["Windows"],"product":"libfido2","vendor":"Yubico","versions":[{"lessThan":"1.17.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/0
{"defaultStatus":"unaffected","platforms":["Windows"],"product":"yubikey-manager","vendor":"Yubico","versions":[{"lessThan":"5.9.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":2.9,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-426","description":"CWE-426 Untrusted Search Path","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://www.yubico.com/support/security-advisories/ysa-2026-01/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94f7b2dc7bf8ec78ab5cbbab594b219754d6e5eee4bd0c1578717239cd89c4f0 · sha256:17e021442728cbbe… · /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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