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CVE-2025-54143— Sandboxed iframes could allow local downloads despite sandbox restrictions

EPSS 0.10% · P28
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I. Basic Information for CVE-2025-54143

Vulnerability Information
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Vulnerability Title
Sandboxed iframes could allow local downloads despite sandbox restrictions
Source: NVD (National Vulnerability Database)
Vulnerability Description
Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page. This vulnerability was fixed in Firefox for iOS 141.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mozilla Firefox for iOS 141 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox for iOS是美国Mozilla基金会的一款针对iOS设备设计的网页浏览器。 Mozilla Firefox for iOS 141之前版本存在安全漏洞，该漏洞源于沙盒iframe可能绕过限制下载文件到设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
MozillaFirefox for iOS 141 ~ * -

II. Public POCs for CVE-2025-54143

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III. Intelligence Information for CVE-2025-54143

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Same Patch Batch · Mozilla · 2025-08-19 · 21 CVEs total

CVE-2025-8364Address bar spoofing using an blob URI on Firefox for Android
CVE-2025-55033Drag and drop gestures in Focus for iOS could allow JavaScript links to be executed incorr
CVE-2025-55032Focus incorrectly ignores Content-Disposition headers for some MIME types
CVE-2025-55029Malicious scripts could spam popups for denial of service attacks
CVE-2025-55031Passkey phishing within Bluetooth range
CVE-2025-55028JavaScript alerts could impede UI interaction or allow denial of service attacks
CVE-2025-55030Content-Disposition headers incorrectly ignored for some MIME types
CVE-2025-54144Internal Firefox open-text URL scheme allowed loading of arbitrary URLs
CVE-2025-54145Scanning a malicious URL utilizing Firefox's open-text scheme with the QR code scanner cou
CVE-2025-8042Sandboxed iframe could start downloads
CVE-2025-9179Sandbox escape due to invalid pointer in the Audio/Video: GMP component
CVE-2025-8041Incorrect URL truncation in Firefox for Android
CVE-2025-9184Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thun
CVE-2025-9187Memory safety bugs fixed in Firefox 142 and Thunderbird 142
CVE-2025-9182Denial-of-service due to out-of-memory in the Graphics: WebRender component
CVE-2025-9183Spoofing issue in the Address Bar component
CVE-2025-9185Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14
CVE-2025-9186Spoofing issue in the Address Bar component of Firefox Focus for Android
CVE-2025-9180Same-origin policy bypass in the Graphics: Canvas2D component
CVE-2025-9181Uninitialized memory in the JavaScript Engine component

IV. Related Vulnerabilities

Same product: Firefox for iOS
Same vendor: Mozilla

V. Comments for CVE-2025-54143

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