---
title: "CVE-2023-5686\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-2023-5686?format=md
keywords: index, follow
---

# CVE-2023-5686

Publication date 20 October 2023

Last updated 11 July 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/CVE-2023-5686?format=md#priority-reason )

## Cvss 3 Severity Score

**5.1 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2023-5686?format=md#impact-score)

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## Description

Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to
5.9.0.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2023-5686?format=md#notes)

### Why is this CVE low priority?

Out of bounds read leading to a crash, unlikely to expose any sensitive information.

[Learn more about Ubuntu priority](https://ubuntu.com/security/cves/about#priority)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| radare2 | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 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 in release |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Ignored end of standard support |
| radare | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.04 LTS jammy | Not in release |
| 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 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)
* [Patch details](https://ubuntu.com/security/CVE-2023-5686?format=md#patch-details)

## Notes

---

### [sbeattie](https://launchpad.net/~sbeattie)

upstream asserts that it is an OOB read when disassembling an
instruction, and thus does not have any security impact (beyond
perhaps a denial of service for someone performing analysis of
malware).

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| radare2 | * Upstream:   [1bdda93](https://github.com/radareorg/radare2/commit/1bdda93e348c160c84e30da3637acef26d0348de) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.1 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.1 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5686)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-5686)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-5686)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2023-5686)

### Other references

* <https://huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0>
* <https://www.cve.org/CVERecord?id=CVE-2023-5686>