If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140 and Thunderbird < 140.
Metrics
Affected Vendors & Products
References
History
Tue, 15 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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Mon, 14 Jul 2025 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140. | If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140 and Thunderbird < 140. |
| References |
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Thu, 03 Jul 2025 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mozilla
Mozilla firefox |
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| CPEs | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* | |
| Vendors & Products |
Mozilla
Mozilla firefox |
Thu, 26 Jun 2025 00:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | firefox: Save as in Devtools could download files without sanitizing the extension | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Tue, 24 Jun 2025 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-434 | |
| Metrics |
cvssV3_1
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Tue, 24 Jun 2025 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140. | |
| References |
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Status: PUBLISHED
Assigner: mozilla
Published: 2025-06-24T12:28:04.603Z
Updated: 2025-07-14T18:26:53.836Z
Reserved: 2025-06-20T14:51:42.561Z
Link: CVE-2025-6435
Updated: 2025-06-24T13:39:11.564Z
Status : Modified
Published: 2025-06-24T13:15:24.560
Modified: 2025-07-14T19:15:35.277
Link: CVE-2025-6435