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SUSE MozillaFirefox Important Security Update 2026-2814-1

suse
Calendar Grey July 9, 2026
Dist Suse Esm H88
SUSE offers an important update for MozillaFirefox addressing 29 issues including memory safety and sandbox escape vulnerabilities.
An update that solves 29 vulnerabilities can now be installed.

Summary

## This update for MozillaFirefox fixes the following issues: * Removed obsolete mozilla-nss-certs and recommends p11-kit-nss-trust (bsc#1269226) Update to Firefox 140.12.0 ESR (MFSA 2026-58, bsc#1268071): * CVE-2026-12289: Privilege escalation in the Graphics: WebRender component. * CVE-2026-12290: Memory safety bug fixed in Firefox ESR 140.12. * CVE-2026-12291: Use-after-free in the Networking: HTTP component. * CVE-2026-12292: Incorrect boundary conditions in the Web Audio component. * CVE-2026-12294: Sandbox escape in the DOM: Workers component. * CVE-2026-12295: Sandbox escape in the DOM: Navigation component. * CVE-2026-12296: Sandbox escape in the Security: Process Sandboxing component. * CVE-2026-12297: Sandbox escape due to incorrect boundary conditions in the Networking component.

Topics%20covered

Topics Covered

security advisory SuSE important browser memory safety sandbox escape

References

* bsc#1268071

* bsc#1269226

Cross-

* CVE-2026-12289

* CVE-2026-12290

* CVE-2026-12291

* CVE-2026-12292

* CVE-2026-12294

* CVE-2026-12295

* CVE-2026-12296

* CVE-2026-12297

* CVE-2026-12298

* CVE-2026-12299

* CVE-2026-12302

* CVE-2026-12304

* CVE-2026-12305

* CVE-2026-12306

* CVE-2026-12307

* CVE-2026-12308

* CVE-2026-12309

* CVE-2026-12310

* CVE-2026-12311

* CVE-2026-12312

* CVE-2026-12313

* CVE-2026-12314

* CVE-2026-12315

* CVE-2026-12324

* CVE-2026-12325

* CVE-2026-12327

* CVE-2026-12328

* CVE-2026-12329

* CVE-2026-12330

CVSS scores:

* CVE-2026-12289 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

* CVE-2026-12289 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

* CVE-2026-12290 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2814-1
Release Date: 2026-07-09T12:26:39Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important browser memory safety sandbox escape

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