vulnerability
Ubuntu: USN-7663-1 (CVE-2025-3523): Thunderbird vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:H/Au:N/C:P/I:C/A:P) | Apr 15, 2025 | Jul 23, 2025 | Aug 18, 2025 |
Severity
7
CVSS
(AV:N/AC:H/Au:N/C:P/I:C/A:P)
Published
Apr 15, 2025
Added
Jul 23, 2025
Modified
Aug 18, 2025
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.
Solution
ubuntu-upgrade-thunderbird
References
- CVE-2025-3523
- https://attackerkb.com/topics/CVE-2025-3523
- CWE-451
- UBUNTU-USN-7663-1
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1958385
- URL-https://ubuntu.com/security/notices/USN-7663-1
- URL-https://www.cve.org/CVERecord?id=CVE-2025-3523
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2025-27/#CVE-2025-3523
- URL-https://www.mozilla.org/security/advisories/mfsa2025-26/
- URL-https://www.mozilla.org/security/advisories/mfsa2025-27/
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