CVE-2026-12290
Received Received - Intake
Memory Corruption Bug in Firefox

Publication date: 2026-06-16

Last updated on: 2026-06-16

Assigner: Mozilla Corporation

Description
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.
CVSS Scores
EPSS Scores
Probability:
Percentile:
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-2026-12290
EUVD
EUVD-2026-37081
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox 152
mozilla firefox_esr 140.12
mozilla firefox_esr 115.37
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 152 or later, or update Firefox ESR to version 140.12 or later, or ESR 115.37 or later.

Executive Summary

This vulnerability is a memory safety bug that was present in Mozilla Firefox. It was addressed and fixed in Firefox version 152, as well as in Firefox ESR versions 140.12 and 115.37.

Impact Analysis

CVE-2026-12290 is a memory safety bug fixed in Firefox 152 and Firefox ESR versions 140.12 and 115.37.

While the provided resources focus on CVE-2026-12289, which is a high-impact privilege escalation vulnerability, there is no detailed information about the specific impact of CVE-2026-12290.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-12290. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart