CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0CVE-2025-3932
https://notcve.org/view.php?id=CVE-2025-3932
14 May 2025 — It was possible to craft an email that showed a tracking link as an attachment. If the user attempted to open the attachment, Thunderbird automatically accessed the link. The configuration to block remote content did not prevent that. Thunderbird has been fixed to no longer allow access to web pages listed in the X-Mozilla-External-Attachment-URL header of an email. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1. • https://bugzilla.mozilla.org/show_bug.cgi?id=1960412 • CWE-288: Authentication Bypass Using an Alternate Path or Channel •
CVSS: 8.2EPSS: 0%CPEs: 1EXPL: 0CVE-2025-3909
https://notcve.org/view.php?id=CVE-2025-3909
14 May 2025 — Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment (message/rfc822) and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened, allowing the embedded JavaScript to run without requiring a file download. This behavior relies on Thunderbird auto-saving the attachment to /tmp and linking to it via the file:/// protocol, potentially enabling Ja... • https://bugzilla.mozilla.org/show_bug.cgi?id=1958376 • CWE-290: Authentication Bypass by Spoofing •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2025-3877
https://notcve.org/view.php?id=CVE-2025-3877
14 May 2025 — A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data (e.g. using /dev/urandom on Linux) or to leak Windows credentials via SMB links when the email is viewed in HTML mode. While user interaction is required to download the .pdf file, visual obfuscation can conceal the download trigger. Viewing the email i... • https://bugzilla.mozilla.org/show_bug.cgi?id=1958580 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2025-3875
https://notcve.org/view.php?id=CVE-2025-3875
14 May 2025 — Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an (invalid) value "Spoofed Name ", Thunderbird treats spoofed@example.com as the actual address. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1. • https://bugzilla.mozilla.org/show_bug.cgi?id=1950629 • CWE-290: Authentication Bypass by Spoofing •
CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0CVE-2025-3859
https://notcve.org/view.php?id=CVE-2025-3859
30 Apr 2025 — Websites directing users to long URLs that caused eliding to occur in the location view could leverage the truncating behavior to potentially trick users into thinking they were on a different webpage This vulnerability affects Focus < 138. • https://bugzilla.mozilla.org/show_bug.cgi?id=1951533 • CWE-451: User Interface (UI) Misrepresentation of Critical Information •
CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0CVE-2025-4093 – firefox: thunderbird: Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10
https://notcve.org/view.php?id=CVE-2025-4093
29 Apr 2025 — Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 128.10 and Thunderbird ESR < 128.10. Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. • https://bugzilla.mozilla.org/show_bug.cgi?id=1894100 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-4092
https://notcve.org/view.php?id=CVE-2025-4092
29 Apr 2025 — Memory safety bugs present in Firefox 137 and Thunderbird 137. 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 affects Firefox < 138 and Thunderbird < 138. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1924108%2C1950780%2C1959367 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2025-4091 – firefox: thunderbird: Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10
https://notcve.org/view.php?id=CVE-2025-4091
29 Apr 2025 — Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. 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 affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird ESR < 128.10. Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. Some of these bugs showed evidence of... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1951161%2C1952105 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2025-4090
https://notcve.org/view.php?id=CVE-2025-4090
29 Apr 2025 — A vulnerability existed in Firefox for Android where potentially sensitive library locations were logged via Logcat. This vulnerability affects Firefox < 138 and Thunderbird < 138. A vulnerability existed in Thunderbird for Android where potentially sensitive library locations were logged via Logcat. This vulnerability affects Firefox < 138 and Thunderbird < 138. • https://bugzilla.mozilla.org/show_bug.cgi?id=1929478 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 5.1EPSS: 0%CPEs: 2EXPL: 0CVE-2025-4089
https://notcve.org/view.php?id=CVE-2025-4089
29 Apr 2025 — Due to insufficient escaping of special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This vulnerability affects Firefox < 138 and Thunderbird < 138. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198 • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') •