CVE-2026-116631
Received Received - Intake

Malicious tel link spoofing in Firefox for iOS

Publication date: 2026-10-26

Last updated on: 2026-10-26

Assigner: Mozilla Corporation

Description
A malicious web page could open a tel link in a window that was showing a different website, causing the phone-call prompt to appear as if that site had requested the call. This vulnerability was fixed in Firefox for iOS 156.1.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-26
Last Modified
2026-10-26
Generated
2026-10-26
AI Q&A
2026-10-26
EPSS Evaluated
N/A
NVD
CVE-2026-116631
EUVD
EUVD-2026-110068

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 156.1

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-451 The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability involves a flaw in Firefox for iOS where a malicious web page can open a tel link in a window showing a different website. This makes the phone-call prompt appear as if the displayed site requested the call, potentially tricking users into making unintended calls.

Impact Analysis

This vulnerability could trick users into making unintended phone calls by disguising the true origin of the call prompt. It may lead to unauthorized calls or exposure of sensitive information if users are deceived into dialing numbers they did not intend to call.

Mitigation Strategies

Update Firefox for iOS to version 156.1 or later to patch the vulnerability. Avoid clicking on suspicious tel links from untrusted websites.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-116631. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart