Multiple Mozilla Firefox Vulnerabilities

Severity

High

Analysis Summary

CVE-2025-23109 CVSS:6.5

Mozilla Firefox for iOS could allow a remote attacker to conduct spoofing attacks, caused by an error when using long hostnames in URLs. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability to spoof the address bar.

CVE-2025-23108 CVSS:6.5

Mozilla Firefox for iOS could allow a remote attacker to conduct spoofing attacks, caused by an error when opening Javascript links in a new tab via long-press. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability to spoof the URL of the new tab.

CVE-2025-0240 CVSS:6.5

Mozilla Firefox could allow a remote attacker to bypass security restrictions, caused by a compartment mismatch when parsing JavaScript JSON module. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability to bypass security restrictions.

Impact

Security Bypass
Gain Access

Indicators of Compromise

CVE

CVE-2025-23109
CVE-2025-23108
CVE-2025-0240

Affected Vendors

Mozilla

Affected Products

Mozilla Firefox for iOS - 133
Mozilla Firefox - 133.0
Mozilla Firefox ESR - 128.5

Remediation

Upgrade to the latest version of Firefox, available from the Mozilla Website.

CVE-2025-23109

CVE-2025-23108

CVE-2025-0240

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