CVE-2023-4535

An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's security.

• CWE-125
• CWE-125

• https://access.redhat.com/errata/RHSA-2023:7879Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2023-4535Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2240914Issue Tracking
• https://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2Patch
• https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651Issue Tracking, Patch
• https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1Release Notes
• https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisoriesVendor Advisory
• https://access.redhat.com/errata/RHSA-2023:7879Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2023-4535Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2240914Issue Tracking
• https://github.com/OpenSC/OpenSC/commit/f1993dc4e0b33050b8f72a3558ee88b24c4063b2Patch
• https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651Issue Tracking, Patch
• https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1Release Notes
• https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisoriesVendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/

Published

Nov 6, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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