{"id":30550,"date":"2025-12-11T16:29:32","date_gmt":"2025-12-11T16:29:32","guid":{"rendered":"http:\/\/localhost\/?p=30550"},"modified":"2025-12-11T16:29:32","modified_gmt":"2025-12-11T16:29:32","slug":"sandboxies-integer-overflow-in-sbieiniserverrc4crypt-allows-sandbox-escape-and-system-compromise","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=30550","title":{"rendered":"Sandboxie&#8217;s Integer Overflow in SbieIniServer::RC4Crypt allows sandbox escape and SYSTEM compromise_CVE-2025-64721"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions 1.16.6 and below, the SYSTEM-level service SbieSvc.exe exposes SbieIniServer::RC4Crypt to sandboxed processes. The handler adds a fixed header size to a caller-controlled value_len without overflow checking. A large value_len (e.g., 0xFFFFFFF0) wraps the allocation size, causing a heap overflow when attacker data is copied into the undersized buffer. This allows sandboxed processes to execute arbitrary code as SYSTEM, fully compromising the host. This issue is fixed in version 1.16.7.&#8221;,&#8221;published&#8221;:&#8221;2025-12-11T21:15:30.685Z&#8221;,&#8221;modified&#8221;:&#8221;2025-12-11T21:15:30.685Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;Sandboxie&#8217;s Integer Overflow in SbieIniServer::RC4Crypt allows sandbox escape and SYSTEM compromise&#8221;,&#8221;source&#8221;:&#8221;GitHub_M&#8221;,&#8221;references&#8221;:&#8221;https:\/\/github.com\/sandboxie-plus\/Sandboxie\/security\/advisories\/GHSA-w476-j57g-96vp\\nhttps:\/\/github.com\/sandboxie-plus\/Sandboxie\/commit\/000492f8c411d24292f1b977a107994347bc7dfa\\nhttps:\/\/github.com\/sandboxie-plus\/Sandboxie\/releases\/tag\/v1.16.7&#8243;,&#8221;id&#8221;:&#8221;CVE-2025-64721&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:[&#8220;CWE-190&#8243;],&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;sandboxie-plus Sandboxie \\u003c 1.16.7&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:9.9,&#8221;severity&#8221;:&#8221;CRITICAL&#8221;,&#8221;vector&#8221;:&#8221;CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:H\/VI:H\/VA:H\/SC:H\/SI:H\/SA:N&#8221;,&#8221;version&#8221;:&#8221;4.0&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;Sandboxie&#8221;,&#8221;version&#8221;:&#8221;\\u003c 1.16.7&#8243;,&#8221;vendor&#8221;:&#8221;sandboxie-plus&#8221;,&#8221;ai_description&#8221;:&#8221;Integer overflow in SbieIniServer::RC4Crypt allows sandboxed processes to execute arbitrary code as SYSTEM, fully compromising the host.&#8221;,&#8221;ai_severity&#8221;:&#8221;Critical&#8221;,&#8221;ai_vendor&#8221;:&#8221;Sandboxie&#8221;,&#8221;ai_product&#8221;:&#8221;Sandboxie&#8221;,&#8221;ai_version&#8221;:&#8221;1.16.6 and below&#8221;,&#8221;ai_score&#8221;:9.9}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions 1.16.6 and below, the SYSTEM-level service SbieSvc.exe exposes SbieIniServer::RC4Crypt&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[9,6,8,45,12,13,7,11,5],"class_list":["post-30550","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-critical","tag-cve","tag-cvss","tag-cvss-99","tag-exploit","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sandboxie&#039;s Integer Overflow in SbieIniServer::RC4Crypt allows sandbox escape and SYSTEM compromise_CVE-2025-64721 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=30550\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sandboxie&#039;s Integer Overflow in SbieIniServer::RC4Crypt allows sandbox escape and SYSTEM compromise_CVE-2025-64721 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. 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