CVE-2023-4535

Name: CVE-2023-4535
Creator: NVD / NIST
Published: 2023-11-06T17:15:12.083+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.8/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2023-4535 is a low-severity vulnerability rated 3.8/10 on the CVSS scale. 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. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

3.8/10

CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS Probability

0.47%

36.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Opensc Project	Opensc	0.23.0
Fedoraproject	Fedora	38
Fedoraproject	Fedora	39
Redhat	Enterprise Linux	9.0

References

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/

Timeline

Published: Nov 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4535?

How severe is CVE-2023-4535?

CVE-2023-4535 has a CVSS score of 3.8/10 (LOW severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4535?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4535?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST