---
title: "CVE-2019-5544\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-2019-5544?format=md
keywords: index, follow
---

# CVE-2019-5544

Publication date 6 December 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2019-5544?format=md#impact-score)

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## Description

OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap
overwrite issue. VMware has evaluated the severity of this issue to be in
the Critical severity range with a maximum CVSSv3 base score of 9.8.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2019-5544?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openslp-dfsg | 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 19.04 disco | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Fixed 1.2.1-11ubuntu0.16.04.2 |
| 14.04 LTS trusty | Fixed 1.2.1-9ubuntu0.3+esm1  Ubuntu Pro |

---

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

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## Notes

---

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

issue is in slpd binary package

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5544)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-5544)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-5544)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-5544)

### Related Ubuntu Security Notices (USN)

+ [USN-4919-1](https://usn.ubuntu.com/USN-4919-1)
+ OpenSLP vulnerability
+ 19 April 2021

### Other references

* <https://www.openwall.com/lists/oss-security/2019/12/06/1>
* <https://www.cve.org/CVERecord?id=CVE-2019-5544>
* <https://www.cisa.gov/known-exploited-vulnerabilities-catalog>