---
id: "CVE-2026-121843"
page: "https://infrastack.ai/live/CVE-2026-121843"
kind: "vulnerability"
aliases: ["CVE-2026-121843"]
title: "Firefox for iOS: a privilege escalation flaw, fixed in version 160.0"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["firefox", "ios", "other"]
not_affected_if: []
published_at: "2026-11-09T14:17:08+00:00"
first_seen_at: "2026-11-09T14:26:59+00:00"
updated_at: "2026-11-09T14:27:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121843", "first_seen_at": "2026-11-09T14:26:59+00:00"}]
exploit_sources: []
---

# Firefox for iOS: a privilege escalation flaw, fixed in version 160.0

Link for people: https://infrastack.ai/live/CVE-2026-121843 (this .md is for agents)

Firefox for iOS has a privilege escalation flaw that the sources do not describe in detail. The sources say it was fixed in Firefox for iOS 160.0, so an attacker may be able to gain more access than they should on an unpatched device.

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

## How to check

- Open Firefox on the iPhone or iPad and check the app version in the App Store updates list or the app's About screen

## Fix

- Firefox for iOS: `160.0`

## Timeline

- 2026-11-09T14:26:59+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121843

## From the sources

Privilege escalation in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.

---

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