CVE-2026-12329
Received Received - Intake
Memory Corruption Flaw Fixed in Firefox ESR

Publication date: 2026-06-16

Last updated on: 2026-06-16

Assigner: Mozilla Corporation

Description
Memory safety bug fixed in Firefox ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12.
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Meta Information
Published
2026-06-16
Last Modified
2026-06-16
Generated
2026-06-16
AI Q&A
2026-06-16
EPSS Evaluated
N/A
NVD
CVE-2026-12329
EUVD
EUVD-2026-37075
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox_esr 140.12
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a memory safety bug that was present in Firefox ESR before version 140.12. Memory safety bugs typically involve errors in how a program manages memory, which can lead to crashes, data corruption, or potentially allow an attacker to execute arbitrary code. This specific bug was fixed in Firefox ESR 140.12.

Impact Analysis

Exploitation of a memory safety bug can lead to serious impacts such as application crashes, data corruption, or unauthorized code execution. This could compromise the security and stability of the Firefox ESR browser, potentially allowing attackers to gain control over the affected system or access sensitive information.

Mitigation Strategies

To mitigate this vulnerability, update Firefox ESR to version 140.12 or later where the memory safety bug has been fixed.

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