Medium severity4.2NVD Advisory· Published Sep 3, 2024· Updated Jun 17, 2026
CVE-2024-45678
CVE-2024-45678
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3(expand)+ 1 more
- (no CPE)
- (no CPE)range: <5.7.0
Patches
Vulnerability mechanics
References
6- ninjalab.io/eucleak/nvdThird Party Advisory
- support.yubico.com/hc/en-us/articles/15705749884444nvdMitigationThird Party Advisory
- www.yubico.com/support/security-advisories/ysa-2024-03/nvdVendor Advisory
- arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/nvdPress/Media Coverage
- news.ycombinator.com/itemnvdIssue Tracking
- ninjalab.io/wp-content/uploads/2024/09/20240903_eucleak.pdfnvdTechnical Description
News mentions
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