CVE-2026-3845

Received Received - Intake

Heap Buffer Overflow in Firefox Android Playback Component

Publication date: 2026-03-10

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description

Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android. This vulnerability was fixed in Firefox 148.0.2.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-10

Last Modified

2026-04-13

Generated

2026-07-06

AI Q&A

2026-03-10

EPSS Evaluated

2026-07-05

NVD

CVE-2026-3845

EUVD

EUVD-2026-10502

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 148.0.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

CVE-2026-3845 is a high-impact security vulnerability found in the Audio/Video Playback component of Firefox for Android versions prior to 148.0.2.

It is a heap buffer overflow, which means that the program writes more data to a buffer located in the heap than it is allocated to hold, potentially corrupting memory.

This overflow can be exploited by an attacker to execute arbitrary code by taking advantage of the memory corruption in the affected component.

Impact Analysis

This vulnerability can have severe impacts as it allows an attacker to execute arbitrary code on the affected device.

Successful exploitation could lead to unauthorized control over the Firefox browser on Android, potentially compromising user data, privacy, and device security.

Because it involves memory corruption, it could also lead to crashes or instability in the browser.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should update Firefox for Android to version 148.0.2 or later, as this version contains the fix for the heap buffer overflow in the Audio/Video Playback component.

Applying this update will also address other high-impact vulnerabilities and improve the overall security and stability of Firefox.

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