CVE-2025-25201— Improper Validation of Admin Key in PIV Smartcard
Quick assessment
Affected
Nitrokey nitrokey-3-firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Nitrokey 3 Firmware是Nitrokey开源的一个 Nitrokey 3 固件。 Nitrokey 3 Firmware存在授权问题漏洞，该漏洞源于PIV应用程序可以接受无效密钥来验证管理密钥。这可能会导致应用程序中存储的数据的完整性受到损害。
Possible ATT&CK Techniques 1 AI
T1552.004 · Private Keys
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I. Basic Information for CVE-2025-25201
Vulnerability Information
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Vulnerability Title
Improper Validation of Admin Key in PIV Smartcard
Source: CVE Program / CVE List V5
Vulnerability Description
Nitrokey 3 Firmware is the the firmware of Nitrokey 3 USB keys. For release 1.8.0, and test releases with PIV enabled prior to 1.8.0, the PIV application could accept invalid keys for authentication of the admin key. This could lead to compromise of the integrity of the data stored in the application. An attacker without access to the proper administration key would be able to generate new keys and overwrite certificates. Such an attacker would not be able to read-out or extract existing private data, nor would they be able to gain access to cryptographic operations that would normally require PIN-based authentication. The issue is fixed in piv-authenticator 0.3.9, and in Nitrokey's firmware 1.8.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nitrokey 3 Firmware 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nitrokey 3 Firmware是Nitrokey开源的一个 Nitrokey 3 固件。 Nitrokey 3 Firmware存在授权问题漏洞，该漏洞源于PIV应用程序可以接受无效密钥来验证管理密钥。这可能会导致应用程序中存储的数据的完整性受到损害。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Nitrokey | nitrokey-3-firmware | = 1.8.0 | - |
|
II. Public POCs for CVE-2025-25201
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-25201 (1)
Security Blog Posts for CVE-2025-25201 (1)
-
Nitrokey 3 Firmware v1.8.1 Security Update | Nitrokey x_refsource_MISC
Vendor Pages for CVE-2025-25201 (1)
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Release v1.8.1 · Nitrokey/nitrokey-3-firmware · GitHub x_refsource_MISC
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Same weakness: CWE-287
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V. Comments for CVE-2025-25201
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