
CVE-2025-0247 – Gentoo Linux Security Advisory 202501-10
https://notcve.org/view.php?id=CVE-2025-0247
07 Jan 2025 — Memory safety bugs present in Firefox 133 and Thunderbird 133. 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 < 134. Memory safety bugs present in Firefox 133 and Thunderbird 133. 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=1835193%2C1910021%2C1919803%2C1931576%2C1931948%2C1932173 •

CVE-2025-0243 – firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6
https://notcve.org/view.php?id=CVE-2025-0243
07 Jan 2025 — Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. 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 < 134 and Firefox ESR < 128.6. Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with eno... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVE-2025-0242 – firefox: thunderbird: Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6
https://notcve.org/view.php?id=CVE-2025-0242
07 Jan 2025 — Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and Thunderbird 128.5. 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 < 134, Firefox ESR < 128.6, and Firefox ESR < 115.19. Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and ... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1874523%2C1926454%2C1931873%2C1932169 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVE-2025-0241 – firefox: Memory corruption when using JavaScript Text Segmentation
https://notcve.org/view.php?id=CVE-2025-0241
07 Jan 2025 — When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6. When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1933023 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-401: Missing Release of Memory after Effective Lifetime •

CVE-2025-0240 – firefox: Compartment mismatch when parsing JavaScript JSON module
https://notcve.org/view.php?id=CVE-2025-0240
07 Jan 2025 — Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6. Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1929623 • CWE-416: Use After Free •

CVE-2025-0239 – firefox: Alt-Svc ALPN validation failure when redirected
https://notcve.org/view.php?id=CVE-2025-0239
07 Jan 2025 — When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6. When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6. A flaw was found in Firefox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1929156 • CWE-295: Improper Certificate Validation CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •

CVE-2025-0238 – firefox: thunderbird: Use-after-free when breaking lines in text
https://notcve.org/view.php?id=CVE-2025-0238
07 Jan 2025 — Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, and Firefox ESR < 115.19. Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Firefox ESR < 115.19, Thunderbird < 134, and Thunderbird < 128.6. A flaw was fou... • https://bugzilla.mozilla.org/show_bug.cgi?id=1915535 • CWE-416: Use After Free •

CVE-2025-0237 – firefox: thunderbird: WebChannel APIs susceptible to confused deputy attack
https://notcve.org/view.php?id=CVE-2025-0237
07 Jan 2025 — The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6. The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. • https://bugzilla.mozilla.org/show_bug.cgi?id=1915257 • CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') CWE-863: Incorrect Authorization •

CVE-2025-0246
https://notcve.org/view.php?id=CVE-2025-0246
07 Jan 2025 — When using an invalid protocol scheme, an attacker could spoof the address bar. *Note: This issue only affected Android operating systems. Other operating systems are unaffected.* *Note: This issue is a different issue from CVE-2025-0244. This vulnerability affects Firefox < 134. • https://bugzilla.mozilla.org/show_bug.cgi?id=1912709 •

CVE-2025-0245
https://notcve.org/view.php?id=CVE-2025-0245
07 Jan 2025 — Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed. This vulnerability affects Firefox < 134. • https://bugzilla.mozilla.org/show_bug.cgi?id=1895342 •