---
title: "CVE-2018-19492\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-2018-19492?format=md
keywords: index, follow
---

# CVE-2018-19492

Publication date 23 November 2018

Last updated 3 October 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**7.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-19492?format=md#impact-score)

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## Description

An issue was discovered in cairo.trm in Gnuplot 5.2.5. This issue allows an
attacker to conduct a buffer overflow with an arbitrary amount of data in
the cairotrm\_options function. This flaw is caused by a missing size check
of an argument passed to the "set font" function. This issue occurs when
the Gnuplot pngcairo terminal is used as a backend.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| gnuplot5 | 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 |
| 22.10 kinetic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 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 |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |
| gnuplot | 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 |
| 23.10 mantic | Ignored end of life, was needed |
| 23.04 lunar | Ignored end of life, was needed |
| 22.10 kinetic | Ignored end of life, was needed |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Ignored end of life |
| 21.04 hirsute | Ignored end of life |
| 20.10 groovy | Ignored end of life |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 5.2.2+dfsg1-2ubuntu1+esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 4.6.6-3ubuntu0.1 |
| 14.04 LTS trusty | Fixed 4.6.4-2ubuntu0.1~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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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.8 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.8 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19492)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-19492)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-19492)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-19492)

### Related Ubuntu Security Notices (USN)

+ [USN-4541-1](https://usn.ubuntu.com/USN-4541-1)
+ Gnuplot vulnerabilities
+ 25 September 2020

+ [USN-7589-1](https://usn.ubuntu.com/USN-7589-1)
+ Gnuplot vulnerabilities
+ 23 June 2025

### Other references

* <https://sourceforge.net/p/gnuplot/bugs/2089/>
* <https://sourceforge.net/p/gnuplot/gnuplot-main/ci/d5020716834582b20a5e12cdd49f39ee4f9dd949/>
* <https://www.cve.org/CVERecord?id=CVE-2018-19492>