CVE-2025-3523
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- CVE-2025-3523
CVE Details
| Release Date: | 2025-04-15 | |
| Impact: | Low | What is this? |
Description
When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.
See more information about CVE-2025-3523 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.4 |
| Vector String: | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | High |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Unchanged |
| Confidentiality Impact: | Low |
| Integrity Impact: | High |
| Availability Impact: | Low |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (thunderbird) | ELSA-2025-4649 | 2025-05-07 |
| Oracle Linux version 9 (thunderbird) | ELSA-2025-4229 | 2025-04-28 |
| Oracle Linux version 9 (thunderbird) | ELSA-2025-7435 | 2025-05-22 |
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