{"id":299302,"date":"2025-03-28T09:48:49","date_gmt":"2025-03-28T16:48:49","guid":{"rendered":"https:\/\/sftarticles.wpenginepowered.com\/en\/?p=299302"},"modified":"2025-07-01T15:02:04","modified_gmt":"2025-07-01T22:02:04","slug":"if-you-use-firefox-this-matters-this-update-fixes-a-previously-unknown-vulnerability","status":"publish","type":"post","link":"https:\/\/cms-articles.softonic.io\/en\/if-you-use-firefox-this-matters-this-update-fixes-a-previously-unknown-vulnerability\/","title":{"rendered":"If you use Firefox, this matters: this update fixes a previously unknown vulnerability"},"content":{"rendered":"\n

A serious security vulnerability has been discovered and patched<\/strong> in Mozilla Firefox, echoing a recent Chrome zero-day issue. This flaw, if exploited, could allow attackers to escape the browser\u2019s sandbox and run malicious code on a victim\u2019s machine. While Google\u2019s Chrome vulnerability (CVE-2025-2783) was already being used in the wild, Mozilla\u2019s similar bug (CVE-2025-2857) was quietly fixed before any known exploitation.<\/p>\n\n\n\n

Firefox\u2019s IPC bug mirrors Chrome’s zero-day<\/h2>\n\n\n\n

Mozilla developers identified a flaw in Firefox\u2019s IPC (inter-process communication) code<\/strong>, where a compromised child process could force the parent to return a powerful handle. This effectively breaks out of the browser\u2019s sandbox\u2014a key security barrier designed to isolate web content from the rest of the system.<\/p>\n\n\n\n

The sandbox is critical to preventing malicious websites<\/strong> from accessing user data or interfering with the operating system. Escaping it gives attackers an open door to install malware or spy on users, making this a high-risk flaw.<\/p>\n\n\n\n

The patch and what users need to do<\/h2>\n\n\n\n

Mozilla has issued a patch and urges users to update immediately to Firefox 136.0.4, Firefox ESR 128.8.1, or ESR 115.21.1<\/strong>. The issue only affects Firefox on Windows; macOS and Linux users are not impacted.<\/p>\n\n\n\n

Although the Chrome vulnerability was actively exploited in a campaign dubbed Operation ForumTroll<\/strong>, targeting Russian users via phishing, there\u2019s no evidence yet that the Firefox flaw was abused. However, both bugs share a concerning resemblance, raising alarms across the cybersecurity community.<\/p>\n\n\n\n

Users should not delay updating their browsers<\/strong>, as the window for potential attacks remains open for those on older versions.<\/p>\n","protected":false},"excerpt":{"rendered":"

A serious security vulnerability has been discovered and patched in Mozilla Firefox, echoing a recent Chrome zero-day issue. This flaw, if exploited, could allow attackers to escape the browser\u2019s sandbox and run malicious code on a victim\u2019s machine. While Google\u2019s Chrome vulnerability (CVE-2025-2783) was already being used in the wild, Mozilla\u2019s similar bug (CVE-2025-2857) was quietly fixed … Continue reading “If you use Firefox, this matters: this update fixes a previously unknown vulnerability”<\/span><\/a><\/p>\n","protected":false},"author":9317,"featured_media":299303,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wpcf-pageviews":0},"categories":[1015],"tags":[],"usertag":[],"vertical":[],"content-category":[],"class_list":["post-299302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/posts\/299302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/users\/9317"}],"replies":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/comments?post=299302"}],"version-history":[{"count":1,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/posts\/299302\/revisions"}],"predecessor-version":[{"id":308385,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/posts\/299302\/revisions\/308385"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/media\/299303"}],"wp:attachment":[{"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/media?parent=299302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/categories?post=299302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/tags?post=299302"},{"taxonomy":"usertag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/usertag?post=299302"},{"taxonomy":"vertical","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/vertical?post=299302"},{"taxonomy":"content-category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/en\/wp-json\/wp\/v2\/content-category?post=299302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}