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CVE-2025-9187— Memory safety bugs fixed in Firefox 142 and Thunderbird 142

EPSS 0.10% · P27
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I. Basic Information for CVE-2025-9187

Vulnerability Information
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Vulnerability Title
Memory safety bugs fixed in Firefox 142 and Thunderbird 142
Source: NVD (National Vulnerability Database)
Vulnerability Description
Memory safety bugs present in Firefox 141 and Thunderbird 141. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 142 and Thunderbird 142.
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和Mozilla Thunderbird 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox和Mozilla Thunderbird都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Thunderbird是一套从Mozilla Application Suite独立出来的电子邮件客户端软件。该软件支持IMAP、POP邮件协议以及HTML邮件格式。 Mozilla Firefox 141版本和Mozilla Thunderbird 141版本存在安全漏洞，该漏洞源于内存损坏，可能导致执行任意代码。
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 142 ~ * -
MozillaThunderbird 142 ~ * -

II. Public POCs for CVE-2025-9187

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III. Intelligence Information for CVE-2025-9187

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

CVE-2025-8042Sandboxed iframe could start downloads
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-2025-54143Sandboxed iframes could allow local downloads despite sandbox restrictions
CVE-2025-9179Sandbox escape due to invalid pointer in the Audio/Video: GMP component
CVE-2025-8364Address bar spoofing using an blob URI on Firefox for Android
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-2025-9182Denial-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
Same vendor: Mozilla

V. Comments for CVE-2025-9187

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