Yubico YubiKey up to 5.7.3 CTAP PIN UV Auth Protocol One weak authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Yubico YubiKey up to 5.7.3 and classified as problematic. The impacted element is an unknown function of the component CTAP PIN UV Auth Protocol One. The manipulation results in weak authentication. This vulnerability is known as CVE-2025-29991. Attacking locally is a requirement. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Yubico YubiKey up to 5.7.3. It has been classified as problematic. Affected is an unknown code of the component CTAP PIN UV Auth Protocol One. The manipulation with an unknown input leads to a weak authentication vulnerability. CWE is classifying the issue as CWE-1390. The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct. This is going to have an impact on integrity. CVE summarizes:

Yubico YubiKey 5.4.1 through 5.7.3 before 5.7.4 has an incorrect FIDO CTAP PIN/UV Auth Protocol Two implementation. It uses the signature length from CTAP PIN/UV Auth Protocol One, even when CTAP PIN/UV Auth Protocol Two was chosen, resulting in a partial signature verification.

The advisory is available at yubico.com. This vulnerability is traded as CVE-2025-29991 since 03/13/2025. The exploitability is told to be difficult. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 5.7.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-9570). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.2
VulDB Meta Temp Score: 2.2

VulDB Base Score: 2.2
VulDB Temp Score: 2.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.2
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak authentication
CWE: CWE-1390
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: YubiKey 5.7.4

Timelineinfo

03/13/2025 🔍
04/03/2025 +20 days 🔍
04/03/2025 +0 days 🔍
06/08/2025 +66 days 🔍

Sourcesinfo

Advisory: yubico.com
Status: Confirmed

CVE: CVE-2025-29991 (🔍)
GCVE (CVE): GCVE-0-2025-29991
GCVE (VulDB): GCVE-100-303090
EUVD: 🔍

Entryinfo

Created: 04/03/2025 07:46
Updated: 06/08/2025 15:08
Changes: 04/03/2025 07:46 (63), 06/08/2025 15:08 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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