SUSE: MozillaThunderbird Critical Security Update CVE-2025-14327
suse
January 19, 2026
An update that solves 13 vulnerabilities can now be installed.
Summary
## This update for MozillaThunderbird fixes the following issues: MFSA 2026-05 (bsc#1256340): * CVE-2026-0877: Mitigation bypass in the DOM in Security component * CVE-2026-0878: Sandbox escape due to incorrect boundary conditions in the Graphics in CanvasWebGL component * CVE-2026-0879: Sandbox escape due to incorrect boundary conditions in the Graphics component * CVE-2026-0880: Sandbox escape due to integer overflow in the Graphics component * CVE-2026-0882: Use-after-free in the IPC component * CVE-2025-14327: Spoofing issue in the Downloads Panel component * CVE-2026-0883: Information disclosure in the Networking component * CVE-2026-0884: Use-after-free in the JavaScript Engine component * CVE-2026-0885: Use-after-free in the JavaScript: GC component
Topics Covered
References
* bsc#1256340
Cross-
* CVE-2025-14327
* CVE-2026-0877
* CVE-2026-0878
* CVE-2026-0879
* CVE-2026-0880
* CVE-2026-0882
* CVE-2026-0883
* CVE-2026-0884
* CVE-2026-0885
* CVE-2026-0886
* CVE-2026-0887
* CVE-2026-0890
* CVE-2026-0891
CVSS scores:
* CVE-2025-14327 ( SUSE ): 5.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2025-14327 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-0877 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
* CVE-2026-0878 ( NVD ): 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
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Severity
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Critical
Announcement ID: SUSE-SU-2026:0153-1
Release Date: 2026-01-19T11:14:05Z
Rating: critical
Topics Covered
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