VULNERABILITY INTELLIGENCE

CVE-2024-45678

CVSS score4.2 MEDIUM

EPSS probability0.33%

CISA KEVNot currently listed

Published2024-09-03

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

Yubico YubiKey 5 Series devices with firmware before 5.7.0 and YubiHSM 2 devices with firmware before 2.4.0 allow an ECDSA secret-key extraction attack (that requires physical access and expensive equipment) in which an electromagnetic side channel is present because of a non-constant-time modular inversion for the Extended Euclidean Algorithm, aka the EUCLEAK issue. Other uses of an Infineon cryptographic library may also be affected.

Weakness classification

nvd@nist.gov: CWE-203
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-203

Primary references

cve@mitre.org — Press/Media Coverage
cve@mitre.org — Issue Tracking
cve@mitre.org — Third Party Advisory
cve@mitre.org — Technical Description
cve@mitre.org — Mitigation, Third Party Advisory
cve@mitre.org — Vendor Advisory