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CVE-2026-21444

libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confide
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:46fab6d6e9f8c1233dee8b56808b2d388c41e1200f75ba2126c136559a5b5bfc
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-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-327","description":"CWE-327: Use of a Broken or Risky Cryptographic Algorithm","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"libtpms","vendor":"stefanberger","versions":[{"status":"affected","version":">= 0.10.0, < 0.10.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-327","description":"CWE-327: Use of a Broken or Risky Cryptographic Algorithm","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/stefanberger/libtpms/commit/33c9ff074cb16c1841ce7d7f33643c17c426743a","tags":["x_refsource_MISC"],"url":"https://github.com/stefanberger/libtpms/commit/33c9ff074cb16c1841ce7d7f33643c17c426743a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/references/2
{"name":"https://github.com/stefanberger/libtpms/issues/541","tags":["x_refsource_MISC"],"url":"https://github.com/stefanberger/libtpms/issues/541"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /containers/cna/references/1
{"name":"https://github.com/stefanberger/libtpms/security/advisories/GHSA-7jxr-4j3g-p34f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/stefanberger/libtpms/security/advisories/GHSA-7jxr-4j3g-p34f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c14c5dd1d8830fbb2e8b2d8517428247fbc5d367a1b013855c86f26e3791e80 · sha256:01c365a946ff4bce… · /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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