---
id: CVE-2026-70331
title: Microsoft Edge for iOS Spoofing Vulnerability
summary: >-
  Improper neutralization of input used for llm prompting in Microsoft Edge for
  iOS allows an unauthorized attacker to perform spoofing over a network.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-1427
vendor: Microsoft
product: Microsoft Edge (Chromium-based)
affected:
  - edge_chromium-based >= 1.0.0.0 < 150.0.4078.50
  - edge_for_ios >= 1.0.0.0 < 150.0.4078.50
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-31T15:21:22.059696Z'
published: '2026-08-28'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T16:22:58.607Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-70331'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70331'
    label: Microsoft Edge for iOS Spoofing Vulnerability
tags:
  - cve.org
epss: 0.00292
epssPercentile: 0.21993
ingestedAt: '2026-09-08T19:08:49.670Z'
---

## Overview

Improper neutralization of input used for llm prompting in Microsoft Edge for iOS allows an unauthorized attacker to perform spoofing over a network.

## Affected

- `edge_chromium-based >= 1.0.0.0 < 150.0.4078.50`
- `edge_for_ios >= 1.0.0.0 < 150.0.4078.50`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.