---
id: "CVE-2026-117871"
kind: "vulnerability"
aliases: ["CVE-2026-117871"]
title: "Firefox: invalid pointer in Graphics component may allow memory corruption"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browsers", "desktop", "firefox", "other"]
not_affected_if: []
published_at: "2026-10-27T14:16:41+00:00"
first_seen_at: "2026-10-27T14:32:21+00:00"
updated_at: "2026-10-27T14:39:14+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117871", "first_seen_at": "2026-10-27T14:32:21+00:00"}]
---

# Firefox: invalid pointer in Graphics component may allow memory corruption

Firefox has an invalid pointer bug in its Graphics component, fixed in Firefox 159 and Firefox ESR 153.6. The sources do not state what an attacker can achieve with it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Firefox version in the About Firefox dialog or with `firefox --version`
- Check the ESR build with `firefox --version` on ESR installs, comparing against `153.6`

## Fix

- Update Firefox to `159` or later
- Update Firefox ESR to `153.6` or later

## Timeline

- 2026-10-27T14:32:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117871

## From the sources

Invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

---

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