CVE-2026-40947
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I. Basic Information for CVE-2026-40947
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Yubico libfido2 before 1.17.0, python-fido2 before 2.2.0, and yubikey-manager before 5.9.1 have an unintended DLL search path.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可信的搜索路径
Source: NVD (National Vulnerability Database)
Vulnerability Title
Yubico多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libfido2等都是Yubico开源的产品。libfido2是一个FIDO设备通信库。python-fido2是一个FIDO2协议客户端与服务器端实现库。yubikey-manager是一个YubiKey配置管理工具。 Yubico多款产品存在安全漏洞，该漏洞源于存在非预期的DLL搜索路径。以下产品及版本受到影响：libfido2 1.17.0之前版本、python-fido2 2.2.0之前版本和yubikey-manager 5.9.1之前版本。
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 |
|---|---|---|---|---|
| Yubico | libfido2 | 0 ~ 1.17.0 | - | |
| Yubico | python-fido2 | 0 ~ 2.2.0 | - | |
| Yubico | yubikey-manager | 0 ~ 5.9.1 | - |
II. Public POCs for CVE-2026-40947
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-426
- CVE-2026-7309
Openshift-controller-manager: openshift container platform: - CVE-2026-35368
uutils coreutils chroot Local Privilege Escalation and chroo - CVE-2026-35603
Claude Code: Insecure System-Wide Configuration Loading Enab - CVE-2026-27290
Adobe Framemaker | Untrusted Search Path (CWE-426) - CVE-2026-39883
OpenTelemetry-Go has an incomplete fix for CVE-2026-24051: B
V. Comments for CVE-2026-40947
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