CVE-2025-8040
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-07-22
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
Memory safety bugs present in Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | From 60.9.0 (exc) |
| mozilla | firefox | From 60.9.0 (exc) |
| mozilla | thunderbird | to 140.0 (inc) |
| mozilla | thunderbird | to 140.0 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves memory safety bugs in Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140, and Thunderbird 140. Some of these bugs show evidence of memory corruption, which means that attackers could potentially exploit them to execute arbitrary code on affected systems.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow attackers to run arbitrary code on your system, potentially leading to unauthorized access, data theft, or system compromise.
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