---
title: "CVE-2020-6923\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-2020-6923?format=md
keywords: index, follow
---

# CVE-2020-6923

Publication date 19 December 2024

Last updated 18 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.7 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2020-6923?format=md#impact-score)

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## Description

The HP Linux Imaging and Printing (HPLIP) software may potentially be
affected by memory buffer overflow.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2020-6923?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| hplip | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Fixed 3.20.3+dfsg0-2ubuntu0.1 |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

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

## Notes

---

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

hplip 3.20.9 replaces the vulnerable file
(/protocol/discovery/mdns.c) with a completely different
replacement based on avahi (/protocol/discovery/avahiDiscovery.c)
as such, a minimal fix is unavailable from HP.

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.7 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.7 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6923)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-6923)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-6923)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-6923)

### Related Ubuntu Security Notices (USN)

+ [USN-7202-1](https://usn.ubuntu.com/USN-7202-1)
+ HPLIP vulnerability
+ 13 January 2025

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2020-6923>
* <https://support.hp.com/us-en/document/c06927115>
* <https://securitylab.github.com/advisories/GHSL-2020-074-hplip/>