CVE-2025-6432— DNS Requests leaked outside of a configured SOCKS proxy
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I. Basic Information for CVE-2025-6432
Vulnerability Information
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Vulnerability Title
DNS Requests leaked outside of a configured SOCKS proxy
Source: NVD (National Vulnerability Database)
Vulnerability Description
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Firefox 140之前版本存在安全漏洞，该漏洞源于Multi-Account Containers存在缺陷，可能导致DNS请求绕过SOCKS代理。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mozilla | Firefox | 140 ~ * | - | |
| Mozilla | Thunderbird | 140 ~ * | - |
II. Public POCs for CVE-2025-6432
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mozilla · 2025-06-24 · 13 CVEs total
| CVE-2025-6435 | Save as in Devtools could download files without sanitizing the extension | |
| CVE-2025-6436 | Memory safety bugs fixed in Firefox 140 and Thunderbird 140 | |
| CVE-2025-6434 | HTTPS-Only exception screen lacked anti-clickjacking delay | |
| CVE-2025-6433 | WebAuthn would allow a user to sign a challenge on a webpage with an invalid TLS certifica | |
| CVE-2025-6431 | The prompt in Firefox for Android that asks before opening a link in an external applicati | |
| CVE-2025-6428 | Firefox for Android opened URLs specified in a link querystring parameter | |
| CVE-2025-6429 | Incorrect parsing of URLs could have allowed embedding of youtube.com | |
| CVE-2025-6430 | Content-Disposition header ignored when a file is included in an embed or object tag | |
| CVE-2025-6427 | connect-src Content Security Policy restriction could be bypassed | |
| CVE-2025-6426 | No warning when opening executable terminal files on macOS | |
| CVE-2025-6424 | Use-after-free in FontFaceSet | |
| CVE-2025-6425 | The WebCompat WebExtension shipped with Firefox exposed a persistent UUID |
IV. Related Vulnerabilities
Same product: Firefox
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
Same vendor: Mozilla
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
V. Comments for CVE-2025-6432
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