CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2025-5986 – thunderbird: Unsolicited File Download, Disk Space Exhaustion, and Credential Leakage via mailbox:/// Links
https://notcve.org/view.php?id=CVE-2025-5986
11 Jun 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/buglist.cgi?bug_id=1958580%2C1968012 • CWE-400: Uncontrolled Resource Consumption CWE-451: User Interface (UI) Misrepresentation of Critical Information •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-5272 – openSUSE Security Advisory - openSUSE-SU-2025:15196-1
https://notcve.org/view.php?id=CVE-2025-5272
27 May 2025 — Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 < 139. Memory safety bugs present in Firefox 138 and Thunderbird 138. 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. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1726254%2C1742738%2C1960121 • CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-5271 – openSUSE Security Advisory - openSUSE-SU-2025:15196-1
https://notcve.org/view.php?id=CVE-2025-5271
27 May 2025 — Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability affects Firefox < 139. Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability affects Firefox < 139 and Thunderbird < 139. These are all security issues fixed in the MozillaFirefox-139.0.1-1.1 package on the GA media of openSUSE Tumbleweed. • https://bugzilla.mozilla.org/show_bug.cgi?id=1920348 • CWE-116: Improper Encoding or Escaping of Output •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0CVE-2025-5270 – openSUSE Security Advisory - openSUSE-SU-2025:15196-1
https://notcve.org/view.php?id=CVE-2025-5270
27 May 2025 — In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139. In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139. These are all security issues fixed in the MozillaFirefox-139.0.1-1.1 package on the GA media of openSUSE Tumbleweed. • https://bugzilla.mozilla.org/show_bug.cgi?id=1910298 • CWE-319: Cleartext Transmission of Sensitive Information •
CVSS: 6.5EPSS: 0%CPEs: 12EXPL: 0CVE-2025-5269 – firefox: thunderbird: Memory safety bug
https://notcve.org/view.php?id=CVE-2025-5269
27 May 2025 — Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. 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 < 128.11. Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. 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=1924108 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 12EXPL: 0CVE-2025-5268 – firefox: thunderbird: Memory safety bugs
https://notcve.org/view.php?id=CVE-2025-5268
27 May 2025 — Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. 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 < 139 and Firefox ESR < 128.11. Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. Some of these bugs showed evidence of memory corruption and we presume that wit... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1950136%2C1958121%2C1960499%2C1962634 • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.4EPSS: 0%CPEs: 4EXPL: 0CVE-2025-5267 – firefox: thunderbird: Clickjacking vulnerability could have led to leaking saved payment card details
https://notcve.org/view.php?id=CVE-2025-5267
27 May 2025 — A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability affects Firefox < 139 and Firefox ESR < 128.11. A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1954137 • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2025-5266 – firefox: thunderbird: Script element events leaked cross-origin resource status
https://notcve.org/view.php?id=CVE-2025-5266
27 May 2025 — Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 139 and Firefox ESR < 128.11. Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1965628 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-829: Inclusion of Functionality from Untrusted Control Sphere •
CVSS: 4.8EPSS: 0%CPEs: 15EXPL: 0CVE-2025-5265 – openSUSE Security Advisory - openSUSE-SU-2025:15174-1
https://notcve.org/view.php?id=CVE-2025-5265
27 May 2025 — Due to insufficient escaping of the ampersand character 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 < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. Due to insufficient escaping of the ampersand character in the “Copy as cURL” feature, an attacker could trick a user into usi... • https://bugzilla.mozilla.org/show_bug.cgi?id=1962301 • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') •
CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 0CVE-2025-5264 – firefox: thunderbird: Potential local code execution in “Copy as cURL” command
https://notcve.org/view.php?id=CVE-2025-5264
27 May 2025 — Due to insufficient escaping of the newline character 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 < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. Due to insufficient escaping of the newline character 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 vul... • https://bugzilla.mozilla.org/show_bug.cgi?id=1950001 • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') CWE-116: Improper Encoding or Escaping of Output •