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CVE-2026-21444

libtpms returns wrong initialization vector when certain symmetric ciphers are used

CVSS 5.5 MEDIUMEPSS 0.1%CWE-327CWE-330
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 5.5EPSS 0.1%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
02 jan 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
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 confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Produtos afetados
stefanberger · libtpms

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