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CVE-2026-3847— Memory safety bugs fixed in Firefox 148.0.2

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 148.0.2之前版本存在安全漏洞，该漏洞源于内存安全问题，可能导致内存损坏并执行任意代码。

AI Predicted 8.5 Difficulty: Moderate EPSS 0.39% · P31
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I. Basic Information for CVE-2026-3847

Vulnerability Information
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Vulnerability Title
Memory safety bugs fixed in Firefox 148.0.2
Source: CVE Program / CVE List V5
Vulnerability Description
Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.
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 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 148.0.2之前版本存在安全漏洞，该漏洞源于内存安全问题，可能导致内存损坏并执行任意代码。
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

Vendor Product Affected Versions CPE Subscribe
Mozilla Firefox 148.0.2 ~ * -

II. Public POCs for CVE-2026-3847

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III. Intelligence Information for CVE-2026-3847

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Vendor Advisories for CVE-2026-3847 (2)

Same Patch Batch · Mozilla · 2026-03-10 · 3 CVEs total

CVE-2026-3846 Same-origin policy bypass in the CSS Parsing and Computation component
CVE-2026-3845 Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-3847

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