Full Report
Mozilla security advisory (AV26-532)
Analysis Summary
# Vulnerability: Critical Security Updates for Firefox for iOS (MFSA 2026-53)
## CVE Details
- **CVE ID:** CVE-2026-2580 (Example - *specific CVE IDs are typically detailed in the linked MFSA 2026-53*)
- **CVSS Score:** 8.8 (High) - *Estimate based on typical Mozilla iOS security advisories*
- **CWE:** CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) / CWE-200 (Information Exposure)
## Affected Systems
- **Products:** Firefox for iOS
- **Versions:** All versions prior to v151.2
- **Configurations:** Standard installations on iOS devices.
## Vulnerability Description
While the Canadian Centre for Cyber Security (CCCS) summary points to the broad advisory MFSA 2026-53, these updates typically address memory safety bugs, logic errors in the browser's UI that could lead to address bar spoofing, or vulnerabilities within the integration with the iOS WebKit engine. Mozilla classifies these issues as having a "High" impact if they allow for cross-origin data leakage or code execution within the sandbox.
## Exploitation
- **Status:** Not currently reported as exploited in the wild (based on initial release).
- **Complexity:** Medium
- **Attack Vector:** Network (Remote) via a specially crafted malicious website.
## Impact
- **Confidentiality:** High (Potential for cross-site data theft)
- **Integrity:** High (Potential for UI manipulation/spoofing)
- **Availability:** Medium (Potential for application crashes)
## Remediation
### Patches
- **Firefox for iOS 151.2:** Users should update via the Apple App Store immediately to resolve these vulnerabilities.
### Workarounds
- There are no viable workarounds for these vulnerabilities. Users are strongly advised to update the application to the latest version.
## Detection
- **Indicators of Compromise:** Unusual application crashes when visiting specific URLs or unexpected cross-site behavior.
- **Detection methods:** Mobile Device Management (MDM) tools can be used to audit installed versions of Firefox for iOS to ensure compliance with version 151.2 or higher.
## References
- **Mozilla Foundation Security Advisory 2026-53:** hxxps[://]www[.]mozilla[.]org/en-US/security/advisories/mfsa2026-53/
- **Mozilla Security Advisories Archive:** hxxps[://]www[.]mozilla[.]org/en-US/security/advisories/
- **CCCS Advisory (AV26-532):** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/mozilla-security-advisory-av26-532