CVE-2023-4535

What it is

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.

At a glance

Exploitability

Can be exploited with physical access without logging in, but needs a user to act. Limited direct impact.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-11-06 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-07 05:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 4.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-11-06 17:15 UTC

Last modified

2026-11-07 05:17 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-125 · Out-of-bounds read

Record status

Modified

Affected

• Opensc Project Opensc 0.23.0
• Fedoraproject Fedora 38
• Fedoraproject Fedora 39
• Redhat Enterprise Linux 9.0

Attack profile CVSS 3.1 · 4.5

Attack vector

Physical

Complexity

High

Privileges needed

None

User interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-4535.md and follow it. Check whether this project is affected by CVE-2023-4535. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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