---
title: "CVE-2023-4535\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2023-4535?format=md
keywords: index, follow
---

# CVE-2023-4535

Publication date 6 November 2023

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**3.8 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2023-4535?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| opensc | 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Ignored end of life, was needs-triage |
| 23.04 lunar | Ignored end of life, was needs-triage |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Ignored end of standard support |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

3.8 · Low

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Physical |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 3.8 · Low |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4535)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-4535)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-4535)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2023-4535)

### Other references

* <https://access.redhat.com/security/cve/CVE-2023-4535>
* <https://www.cve.org/CVERecord?id=CVE-2023-4535>