---
id: "CVE-2026-117886"
kind: "vulnerability"
aliases: ["CVE-2026-117886"]
title: "Firefox: incorrect boundary checks in Graphics Text component fixed"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browsers", "desktop", "firefox", "runtime"]
not_affected_if: ["patched-version"]
published_at: "2026-10-27T14:16:43+00:00"
first_seen_at: "2026-10-27T14:32:21+00:00"
updated_at: "2026-10-27T14:37:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117886", "first_seen_at": "2026-10-27T14:32:21+00:00"}]
---

# Firefox: incorrect boundary checks in Graphics Text component fixed

Firefox's Graphics: Text component has incorrect boundary conditions, a memory-safety style flaw whose exact effect the sources do not describe. Fixed in Firefox 159, Firefox ESR 115.44 and Firefox ESR 153.6.

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

## How to check

- Run `firefox --version` (or check About Firefox) and compare against `159`, `115.44` or `153.6` for ESR.
- Check the installed ESR channel version on managed desktops via your package or MDM inventory.

## Fix

- Update Firefox to `159` or later.
- Update Firefox ESR to `115.44` or `153.6` or later.

## Timeline

- 2026-10-27T14:32:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117886

## From the sources

Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.

---

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