NVD – CVE-2023-40660

975825pwpadmin -
March 26, 2026
Cyber Attacks




CVE-2023-40660
Detail




Description

A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user’s awareness.

Metrics

 







NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.

CVSS 4.0 Severity and Vector Strings:

References to Advisories, Solutions, and Tools


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URL Source(s) Tag(s)

http://www.openwall.com/lists/oss-security/2023/12/13/2 		CVE

https://access.redhat.com/errata/RHSA-2023:7876 		CVE, Inc., Red Hat

https://access.redhat.com/errata/RHSA-2023:7879 		CVE, Inc., Red Hat

https://access.redhat.com/security/cve/CVE-2023-40660 		CVE, Inc., Red Hat

Third Party Advisory 

https://bugzilla.redhat.com/show_bug.cgi?id=2240912 		CVE, Inc., Red Hat

Issue Tracking 

https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651 		CVE, Inc., Red Hat

Issue Tracking 

https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1 		CVE, Inc., Red Hat

Release Notes 

https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories 		CVE, Inc., Red Hat

Vendor Advisory 

https://lists.debian.org/debian-lts-announce/2023/11/msg00024.html 		CVE

https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html 		CVE

https://lists.fedoraproject.org/archives/list/[email protected]/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/ 		CVE

https://lists.fedoraproject.org/archives/list/[email protected]/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/ 		CVE

Weakness Enumeration









CWE-ID CWE Name Source

CWE-287
Improper Authentication

cwe source acceptance level

NIST  








Red Hat, Inc.  

Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-40660
NVD
Published Date:
11/06/2023
NVD
Last Modified:
11/03/2025

Source:
Red Hat, Inc.




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