CVE-2024-45678

mediumpriority · track · 17EPSS 0.003 · 26 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (26th) EPSS

CVSS 4.2 · medium

Is it mine?

25 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cert_bund · codesys_psirt

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedFirmware <4.52 installed on CODESYS Key series 3codesys_psirt
Update the CODESYS Key firmware to version 4.52. Updating the firmware also protects the future usage of additional CODESYS Key features by the CODESYS software and general usage by other software. The update can be installed, for example, via the CodeMeter Control Center.
FixedFirmware 4.5.2phoenix_contact_psirt
Phoenix Contact strongly recommends upgrading affected ESL STICK USB A s to firmware version 4.5.2 which fixes this vulnerability.
https://www.wibu.com/support/faq/codemeter-hardware-general.html#faq-29694
FixedFirmware 4.5.2 installed on ESL STICK USB Aphoenix_contact_psirt
Phoenix Contact strongly recommends upgrading affected ESL STICK USB A s to firmware version 4.5.2 which fixes this vulnerability.
https://www.wibu.com/support/faq/codemeter-hardware-general.html#faq-29694
MitigationFirmware <4.52 installed on CODESYS Key series 3codesys_psirt
Regardless of the vulnerability described here, CODESYS GmbH recommends that physical access to the CODESYS Key should only be granted to authorized persons. Especially in the case of productive control systems, removal of the CODESYS Key can affect the controlled machine or process. This generally recommended restriction of access also reduces the attack surface for this vulnerability, as its exploitation requires physical access.

cvss

Technical severity, 0–10. One row per scoring source.

4.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.9–4.9

v3.14.2mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 0.5 · impact 3.6

v3.14.2mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.14.2mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondaryexploitability 0.5 · impact 3.6

v3.14.2mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · Phoenix Contact PSIRT DE

v3.13.9lowCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.14.9mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · CODESYS PSIRT

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-203USCWE-203US

affected products (25)

Products and version ranges known to be affected.

IBM Security Verify Access < 10.0.8-ISS-ISVA-IF0001all versionscert_bundDE
IBM Security Verify Access< 10.0.8-ISS-ISVA-IF0001cert_bundDE
Firmware 4.52 installed on CODESYS Key series 3all versionsfixedcodesys_psirtDE
Firmware <4.52 installed on CODESYS Key series 3all versionscodesys_psirtDE
n/a n/a≤ n/aenisa_euvdEU
yubico security key c nfc by yubico firmware< 5.7nvdUScpe:2.3:o:yubico:security_key_c_nfc_by_yubico_firmware:*:*:*:*:*:*:*:*
yubico security key nfc by yubico firmware< 5.7nvdUScpe:2.3:o:yubico:security_key_nfc_by_yubico_firmware:*:*:*:*:*:*:*:*
yubico yubihsm 2 fips firmware< 2.4.0nvdUScpe:2.3:o:yubico:yubihsm_2_fips_firmware:*:*:*:*:*:*:*:*
yubico yubihsm 2 firmware< 2.4.0nvdUScpe:2.3:o:yubico:yubihsm_2_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5 nano fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5_nano_fips_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5 nano firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5_nano_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5 nfc fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5_nfc_fips_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5 nfc firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5_nfc_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_fips_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c nano fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_nano_fips_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c nano firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_nano_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c nfc fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_nfc_fips_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5c nfc firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5c_nfc_firmware:*:*:*:*:*:*:*:*
yubico yubikey 5ci fips firmware< 5.7nvdUScpe:2.3:o:yubico:yubikey_5ci_fips_firmware:*:*:*:*:*:*:*:*

showing 20 of 25

advisories (3)

Vendor and ecosystem advisories describing this.

Advisory2025-01_VDE-2025-001CODESYS Key physical side-channel vulnerability2025-01-21csaf · codesys_psirtDE
The CODESYS Key USB dongle, which is based on WIBU CodeMeter technology, is affected by a physical side-channel vulnerability.
VDE-2025-005Phoenix Contact: Security Advisory for ESL Stick USB-A2025-01-14csaf · phoenix_contact_psirtDE
A vulnerability has been found in a cryptographic library of Infineon Technologies that is part of the firmware of the CmDongles. The exploitation of this vulnerability has been classified as complex: potential attackers need physical access and require special equipment to exploit the vulnerability. In general, this vulnerability affects only ECC keys used to calculate signatures with the ECDSA algorithm.
WID-SEC-W-2024-3535IBM Security Verify Access: Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2024-11-24csaf · cert_bundDE
Ein Angreifer mit physischem Zugriff kann eine Schwachstelle in IBM Security Verify Access ausnutzen, um Informationen offenzulegen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund codesys_psirt nvd phoenix_contact_psirt NVD CVE.org MITRE

published 2024-09-03modified 2026-06-17

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+881 more

references (19)

External citations — patches, advisories, analysis.

scry

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