ESB-2026.4409

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4409 MFSA 2026-37 Security Vulnerabilities fixed in Firefox ESR 115.35.1 29 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Mozilla Firefox ESR Publisher: Mozilla Foundation Operating System: Windows Linux macOS Resolution: Patch/Upgrade CVE Names: CVE-2026-7320 CVE-2026-7322 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2026-37/ Comment: CVSS (Max): 7.5* CVE-2026-7320 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) CVSS Source: CISA-ADP Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N * Not all CVSS available when published EPSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2026-37 Security Vulnerabilities fixed in Firefox ESR 115.35.1 Announced: April 28, 2026 Impact: high Products: Firefox ESR Fixed in: Firefox ESR 115.35.1 # CVE-2026-7320: Information disclosure due to incorrect boundary conditions in the Audio/Video component Reporter: Xuehao Guo Impact: high References o Bug 2027433 # CVE-2026-7322: Memory safety bugs fixed in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1 Reporter: C.M.Chang, Christian Holler, Steve Fink and the Mozilla Fuzzing Team Impact: critical Description Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. 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. References o Memory safety bugs fixed in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================