CVSS: 6.2EPSS: 0%CPEs: 35EXPL: 0CVE-2025-49175 – Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors
https://notcve.org/view.php?id=CVE-2025-49175
17 Jun 2025 — A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash. USN-7573-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Nils Emmerich discovered that the X.Org X Server incorrectly handled certain memory operations. • https://access.redhat.com/security/cve/CVE-2025-49175 • CWE-125: Out-of-bounds Read •
CVSS: 7.3EPSS: 0%CPEs: 35EXPL: 0CVE-2025-49176 – Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension
https://notcve.org/view.php?id=CVE-2025-49176
17 Jun 2025 — A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check. This update for xorg-x11-server fixes the following issues. Out-of-bounds access in X Rendering extension (Animated cursors). Integer overflow in Big Requests Extension. • https://access.redhat.com/security/cve/CVE-2025-49176 • CWE-190: Integer Overflow or Wraparound •
CVSS: 5.5EPSS: 0%CPEs: 35EXPL: 0CVE-2025-49178 – Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore
https://notcve.org/view.php?id=CVE-2025-49178
17 Jun 2025 — A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service. This update for xorg-x11-server fixes the following issues. Out-of-bounds access in X Rendering extension (Animated cursors). Integer overflow in Big Requests Extension. • https://access.redhat.com/security/cve/CVE-2025-49178 • CWE-667: Improper Locking •
CVSS: 7.3EPSS: 0%CPEs: 34EXPL: 0CVE-2025-49179 – Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension
https://notcve.org/view.php?id=CVE-2025-49179
17 Jun 2025 — A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks. This update for xorg-x11-server fixes the following issues. Out-of-bounds access in X Rendering extension (Animated cursors). Integer overflow in Big Requests Extension. • https://access.redhat.com/security/cve/CVE-2025-49179 • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.8EPSS: 0%CPEs: 35EXPL: 0CVE-2025-49180 – Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension
https://notcve.org/view.php?id=CVE-2025-49180
17 Jun 2025 — A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate. USN-7573-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Nils Emmerich discovered that the X.Org X Server incorrectly handled certain memory operations. • https://access.redhat.com/security/cve/CVE-2025-49180 • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.8EPSS: 0%CPEs: 23EXPL: 0CVE-2025-3932 – thunderbird: Tracking Links in Attachments Bypassed Remote Content Blocking
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: 6.5EPSS: 0%CPEs: 23EXPL: 0CVE-2025-3909 – thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link
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: 7.8EPSS: 0%CPEs: 23EXPL: 0CVE-2025-3875 – thunderbird: Sender Spoofing via Malformed From Header in Thunderbird
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. The Mozilla Foundation's Security Advisory describes the following issue: Thunderbird parses addresses in a way that can allow sender spoofing in case the server all... • https://bugzilla.mozilla.org/show_bug.cgi?id=1950629 • CWE-290: Authentication Bypass by Spoofing •
CVSS: 7.5EPSS: 0%CPEs: 24EXPL: 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: 7.8EPSS: 0%CPEs: 24EXPL: 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 •