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: 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: 7.6EPSS: 0%CPEs: 6EXPL: 0CVE-2025-4087 – firefox: thunderbird: Unsafe attribute access during XPath parsing
https://notcve.org/view.php?id=CVE-2025-4087
29 Apr 2025 — A vulnerability was identified in Firefox where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird ESR < 128.10. A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to o... • https://bugzilla.mozilla.org/show_bug.cgi?id=1952465 • CWE-125: Out-of-bounds Read •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 0CVE-2025-4084
https://notcve.org/view.php?id=CVE-2025-4084
29 Apr 2025 — Due to insufficient escaping of the 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 bug only affects Firefox for Windows. Other versions of Firefox are unaffected.* This vulnerability affects Firefox ESR < 128.10, Firefox ESR < 115.23, and Thunderbird ESR < 128.10. Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1949994%2C1956698%2C1960198 • CWE-116: Improper Encoding or Escaping of Output •
CVSS: 9.4EPSS: 0%CPEs: 6EXPL: 0CVE-2025-4083 – firefox: thunderbird: Process isolation bypass using "javascript:" URI links in cross-origin frames
https://notcve.org/view.php?id=CVE-2025-4083
29 Apr 2025 — A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10. A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute... • https://bugzilla.mozilla.org/show_bug.cgi?id=1958350 • CWE-653: Improper Isolation or Compartmentalization •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 0CVE-2025-4082
https://notcve.org/view.php?id=CVE-2025-4082
29 Apr 2025 — Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. *This bug only affects Firefox for macOS. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10. Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vul... • https://bugzilla.mozilla.org/show_bug.cgi?id=1937097 • CWE-125: Out-of-bounds Read •
CVSS: 9.0EPSS: 0%CPEs: 7EXPL: 0CVE-2025-2817 – firefox: thunderbird: Privilege escalation in Firefox Updater
https://notcve.org/view.php?id=CVE-2025-2817
29 Apr 2025 — Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128... • https://bugzilla.mozilla.org/show_bug.cgi?id=1917536 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-94: Improper Control of Generation of Code ('Code Injection') •
CVSS: 6.6EPSS: 0%CPEs: 3EXPL: 0CVE-2025-3523 – thunderbird: User Interface (UI) Misrepresentation of attachment URL
https://notcve.org/view.php?id=CVE-2025-3523
15 Apr 2025 — 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. Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or informat... • https://bugzilla.mozilla.org/show_bug.cgi?id=1958385 • CWE-451: User Interface (UI) Misrepresentation of Critical Information •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2025-2830 – thunderbird: Information Disclosure of /tmp directory listing
https://notcve.org/view.php?id=CVE-2025-2830
15 Apr 2025 — By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2. An update for thunderbird... • https://bugzilla.mozilla.org/show_bug.cgi?id=1956379 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2025-3522 – thunderbird: Leak of hashed Window credentials via crafted attachment URL
https://notcve.org/view.php?id=CVE-2025-3522
15 Apr 2025 — Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vuln... • https://bugzilla.mozilla.org/show_bug.cgi?id=1955372 • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') CWE-1220: Insufficient Granularity of Access Control •