CVE-2025-11714
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Vulnerability report for CVE-2025-11714, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-10-14

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description

Memory safety bugs present in Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143. 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 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVSS Scores

EPSS Scores

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Meta Information

Published
2025-10-14
Last Modified
2026-04-13
Generated
2026-07-06
AI Q&A
2025-10-14
EPSS Evaluated
2026-07-05
NVD

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
mozilla thunderbird to 140.0 (inc)
mozilla thunderbird to 140.0 (inc)
mozilla firefox From 60.9.0 (exc)
mozilla firefox From 60.9.0 (exc)
mozilla firefox From 60.9.0 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability involves memory safety bugs in certain versions of Firefox and Thunderbird, including Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143, and Thunderbird 143. These bugs can cause memory corruption, which could potentially be exploited by attackers to run arbitrary code on affected systems.

Impact Analysis

If exploited, this vulnerability could allow an attacker to execute arbitrary code on your system, potentially leading to unauthorized access, data theft, or system compromise.

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EPSS Chart