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CVE-2025-9183— Spoofing issue in the Address Bar component

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和Mozilla Firefox ESR都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox 142之前版本和Mozilla Firefox ESR 140.2之前版本存在安全漏洞，该漏洞源于Address Bar组件存在欺骗问题。

AI Predicted 4.3 Difficulty: Easy EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2025-9183

Vulnerability Information
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Vulnerability Title
Spoofing issue in the Address Bar component
Source: CVE Program / CVE List V5
Vulnerability Description
Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 142 and Firefox ESR 140.2.
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和Mozilla Firefox ESR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox和Mozilla Firefox ESR都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Firefox ESR是Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox 142之前版本和Mozilla Firefox ESR 140.2之前版本存在安全漏洞，该漏洞源于Address Bar组件存在欺骗问题。
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 140.2 ~ 140.* -

II. Public POCs for CVE-2025-9183

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III. Intelligence Information for CVE-2025-9183

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Vendor Advisories for CVE-2025-9183 (2)

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

CVE-2025-8042 Sandboxed iframe could start downloads
CVE-2025-55033 Drag and drop gestures in Focus for iOS could allow JavaScript links to be executed incorr
CVE-2025-55032 Focus incorrectly ignores Content-Disposition headers for some MIME types
CVE-2025-55029 Malicious scripts could spam popups for denial of service attacks
CVE-2025-55031 Passkey phishing within Bluetooth range
CVE-2025-55028 JavaScript alerts could impede UI interaction or allow denial of service attacks
CVE-2025-55030 Content-Disposition headers incorrectly ignored for some MIME types
CVE-2025-54144 Internal Firefox open-text URL scheme allowed loading of arbitrary URLs
CVE-2025-54145 Scanning a malicious URL utilizing Firefox's open-text scheme with the QR code scanner cou
CVE-2025-54143 Sandboxed iframes could allow local downloads despite sandbox restrictions
CVE-2025-9179 Sandbox escape due to invalid pointer in the Audio/Video: GMP component
CVE-2025-8364 Address bar spoofing using an blob URI on Firefox for Android
CVE-2025-8041 Incorrect URL truncation in Firefox for Android
CVE-2025-9184 Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thun
CVE-2025-9187 Memory safety bugs fixed in Firefox 142 and Thunderbird 142
CVE-2025-9182 Denial-of-service due to out-of-memory in the Graphics: WebRender component
CVE-2025-9185 Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14
CVE-2025-9186 Spoofing issue in the Address Bar component of Firefox Focus for Android
CVE-2025-9180 Same-origin policy bypass in the Graphics: Canvas2D component
CVE-2025-9181 Uninitialized memory in the JavaScript Engine component

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2025-9183

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