Risk Scores
CVSS v3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla Foundation | Mozilla Firefox |
Timeline
- Apr 7, 2026 CVE Published
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3334 MFSA 2026-25 Security Vulnerabilities fixed in Firefox 149.0.2 8 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Mozilla Firefox Publisher: Mozilla Foundation Operating System: Windows Linux macOS Resolution: Patch/Upgrade CVE Names: CVE-2026-5732 CVE-2026-5731 CVE-2026-5734 CVE-2026-5733 CVE-2026-5735 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2026-25/ Comment: CVSS (Max): 9.8 CVE-2026-5735 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: [NIST], 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:H/A:H EPSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2026-25 Security Vulnerabilities fixed in Firefox 149.0.2 Announced: April 7, 2026 Impact: high Products: Firefox Fixed in: Firefox 149.0.2 # CVE-2026-5732: Incorrect boundary conditions, integer overflow in the Graphics: Text component Reporter: Sajeeb Lohani Impact: high References o Bug 2017867 # CVE-2026-5733: Incorrect boundary conditions in the Graphics: WebGPU component Reporter: Inseo An Impact: high References o Bug 2022554 # CVE-2026-5731: Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 Reporter: Brian Grinstead, Christian Holler, Tom Schuster and the Mozilla Fuzzing Team Impact: high Description Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 # CVE-2026-5734: Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 Reporter: Brian Grinstead, Christian Holler, Tom Schuster and the Mozilla Fuzzing Team Impact: high Description Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 # CVE-2026-5735: Memory safety bugs fixed in Firefox 149.0.2 and Thunderbird 149.0.2 Reporter: Brian Grinstead, Christian Holler and the Mozilla Fuzzing Team Impact: high Description Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 149.0.2 and Thunderbird 149.0.2 - --------------------------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. 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| Vendor | Product | Versions |
|---|---|---|
| Mozilla Foundation | Mozilla Firefox |