---
id: "CVE-2026-124948"
page: "https://infrastack.ai/live/CVE-2026-124948"
kind: "vulnerability"
aliases: ["CVE-2026-124948"]
title: "Firefox: Graphics use-after-free flaw could let a web page run code"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Firefox", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browser", "desktop", "firefox", "other"]
not_affected_if: ["up-to-date-firefox"]
published_at: "2026-11-10T14:17:29+00:00"
first_seen_at: "2026-11-10T14:22:20+00:00"
updated_at: "2026-11-10T14:23:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124948", "first_seen_at": "2026-11-10T14:22:20+00:00"}]
exploit_sources: []
---

# Firefox: Graphics use-after-free flaw could let a web page run code

Link for people: https://infrastack.ai/live/CVE-2026-124948 (this .md is for agents)

Firefox's Graphics component has a use-after-free and incorrect boundary checks, a memory bug that can corrupt the browser's memory. The sources describe the fix in Firefox 160 and Firefox ESR 153.7 but do not state the attacker's exact outcome.

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

## Affected

- vendor:Firefox affected range not listed fixed no fixed version listed

## How to check

- Check the Firefox version under Help > About Firefox, or run `firefox --version` on the command line.
- Compare it against the fixed versions below.

## Fix

- Firefox: `160`
- Firefox ESR: `153.7`

## Timeline

- 2026-11-10T14:22:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124948

## From the sources

Incorrect boundary conditions, use-after-free in the Graphics component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_