{"id":56088,"date":"2025-06-30T15:42:26","date_gmt":"2025-06-30T15:42:26","guid":{"rendered":""},"modified":"2025-07-10T17:21:18","modified_gmt":"2025-07-10T23:21:18","slug":"cve-2025-6426-executable-file-warning-vulnerability-in-firefox-for-macos","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6426-executable-file-warning-vulnerability-in-firefox-for-macos\/","title":{"rendered":"CVE-2025-6426: Executable File Warning Vulnerability in Firefox for macOS<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-6426 is a critical security vulnerability identified in Firefox for macOS. It is found that the executable file warning system does not provide appropriate alerts to users before opening files with the ‘terminal’ extension. This issue leaves the system exposed to potential<\/a> threats, leading to possible system compromise or data leakage. Given that this vulnerability<\/a> is present in Firefox versions below 140 and Firefox ESR versions less than 128.12, users of these versions are at significant risk.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-6426
\nSeverity: High (8.8 CVSS Score)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: System compromise, Data leakage<\/a><\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Firefox for macOS | < 140\nFirefox ESR for macOS | < 128.12\n\nHow the Exploit Works<\/strong><\/p>\n

The vulnerability exploits the lack of a warning system in Firefox<\/a> that should alert users when opening files with the ‘terminal’ extension. An attacker can craft a malicious ‘terminal’ file and trick a user<\/a> into opening it. Once the file is opened, the attacker can execute arbitrary code<\/a>, gain unauthorized access to the system, or extract sensitive information, leading to a system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of a terminal command that could exploit the vulnerability<\/a>:<\/p>\n

# A malicious terminal command that uses the vulnerability\nopen -a Firefox malicious_file.terminal<\/code><\/pre>\n
This command opens the `malicious_file.terminal` using Firefox. If the user is running a vulnerable version of Firefox, the malicious file will be opened without any warning, potentially leading to the execution of harmful code<\/a>.<\/p>\n
Mitigation Measures<\/strong><\/p>\n
While the ultimate solution to this vulnerability<\/a> is to apply the appropriate vendor patch, users can also employ WAF (Web Application Firewall) or IDS (Intrusion Detection System) as temporary mitigation measures until the patch is applied. Users are strongly advised to update their Firefox to the latest version to avoid potential exploitation of this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-6426 is a critical security vulnerability identified in Firefox for macOS. It is found that the executable file warning system does not provide appropriate alerts to users before opening files with the ‘terminal’ extension. This issue leaves the system exposed to potential threats, leading to possible system compromise or data leakage. Given that this […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[77],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-56088","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apple"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t