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CVE-2025-0245— Lock screen setting bypass in Firefox Focus for Android

Quick assessment

Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 134版本之前存在安全漏洞，该漏洞源于在某些情况下，Focus在使用前需要进行身份验证的用户选择加入设置可能会被绕过。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2025-0245

Vulnerability Information
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Vulnerability Title
Lock screen setting bypass in Firefox Focus for Android
Source: CVE Program / CVE List V5
Vulnerability Description
Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed. This vulnerability was fixed in Firefox 134.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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。 Mozilla Firefox 134版本之前存在安全漏洞，该漏洞源于在某些情况下，Focus在使用前需要进行身份验证的用户选择加入设置可能会被绕过。
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 134 ~ * -

II. Public POCs for CVE-2025-0245

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III. Intelligence Information for CVE-2025-0245

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Vendor Advisories for CVE-2025-0245 (1)

Same Patch Batch · Mozilla · 2025-01-07 · 11 CVEs total

CVE-2025-0244 Address bar spoofing using an invalid protocol scheme on Firefox for Android
CVE-2025-0239 Alt-Svc ALPN validation failure when redirected
CVE-2025-0246 Address bar spoofing using an invalid protocol scheme on Firefox for Android
CVE-2025-0237 WebChannel APIs susceptible to confused deputy attack
CVE-2025-0238 Use-after-free when breaking lines in text
CVE-2025-0241 Memory corruption when using JavaScript Text Segmentation
CVE-2025-0240 Compartment mismatch when parsing JavaScript JSON module
CVE-2025-0243 Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbi
CVE-2025-0242 Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR
CVE-2025-0247 Memory safety bugs fixed in Firefox 134 and Thunderbird 134

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2025-0245

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