---
id: CVE-2017-5436
title: >-
  An out-of-bounds write in the Graphite 2 library triggered with a maliciously
  crafted Graphite font
summary: >-
  An out-of-bounds write in the Graphite 2 library triggered with a maliciously
  crafted Graphite font. This results in a potentially exploitable crash. This
  issue was fixed in the Graphite 2 library as well as Mozilla products. This
  vulner…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: sil
product: graphite2
affected:
  - debian_linux = 8.0
  - enterprise_linux = 6.0
  - enterprise_linux = 7.0
  - enterprise_linux_desktop = 6.0
  - enterprise_linux_desktop = 7.0
  - enterprise_linux_server = 6.0
  - enterprise_linux_server = 7.0
  - enterprise_linux_server_aus = 7.3
  - enterprise_linux_server_aus = 7.4
  - enterprise_linux_server_eus = 7.3
  - enterprise_linux_server_eus = 7.4
  - enterprise_linux_server_eus = 7.5
  - enterprise_linux_workstation = 6.0
  - enterprise_linux_workstation = 7.0
  - graphite2 < 1.3.10
  - firefox < 45.9.0
  - 'firefox >= 46.0, < 52.1.0'
  - thunderbird < 52.1.0
patched:
  - graphite2 1.3.10
  - firefox 52.1.0
  - thunderbird 52.1.0
published: '2018-06-11'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:29:13.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2017-5436'
references:
  - url: 'http://www.securityfocus.com/bid/97940'
    label: security@mozilla.org
  - url: 'http://www.securitytracker.com/id/1038320'
    label: security@mozilla.org
  - url: 'https://access.redhat.com/errata/RHSA-2017:1104'
    label: security@mozilla.org
  - url: 'https://access.redhat.com/errata/RHSA-2017:1106'
    label: security@mozilla.org
  - url: 'https://access.redhat.com/errata/RHSA-2017:1201'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1345461'
    label: security@mozilla.org
  - url: 'https://security.gentoo.org/glsa/201706-25'
    label: security@mozilla.org
  - url: 'https://www.debian.org/security/2017/dsa-3831'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-10/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-11/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-12/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-13/'
    label: security@mozilla.org
  - url: 'http://www.securityfocus.com/bid/97940'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securitytracker.com/id/1038320'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2017:1104'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2017:1106'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2017:1201'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1345461'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/201706-25'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2017/dsa-3831'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-10/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-11/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-12/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2017-13/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02289
epssPercentile: 0.83111
ingestedAt: '2026-10-27T18:52:09.323Z'
---

## Overview

An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

## Affected

- `debian_linux = 8.0`
- `enterprise_linux = 6.0`
- `enterprise_linux = 7.0`
- `enterprise_linux_desktop = 6.0`
- `enterprise_linux_desktop = 7.0`
- `enterprise_linux_server = 6.0`
- `enterprise_linux_server = 7.0`
- `enterprise_linux_server_aus = 7.3`
- `enterprise_linux_server_aus = 7.4`
- `enterprise_linux_server_eus = 7.3`
- `enterprise_linux_server_eus = 7.4`
- `enterprise_linux_server_eus = 7.5`
- `enterprise_linux_workstation = 6.0`
- `enterprise_linux_workstation = 7.0`
- `graphite2 < 1.3.10`
- `firefox < 45.9.0`
- `firefox >= 46.0, < 52.1.0`
- `thunderbird < 52.1.0`

## Remediation

Upgrade past the affected range:

- `graphite2 1.3.10`
- `firefox 52.1.0`
- `thunderbird 52.1.0`