Description
Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Published: 2026-09-29
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4810-1 thunderbird security update
Debian DLA Debian DLA DLA-4814-1 firefox-esr security update
Debian DSA Debian DSA DSA-6533-1 firefox-esr security update
Debian DSA Debian DSA DSA-6536-1 thunderbird security update
History

Tue, 06 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Thu, 01 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-285

Thu, 01 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}


Thu, 01 Oct 2026 05:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-285

Thu, 01 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-285

Wed, 30 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Description Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
References

Wed, 30 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
References

Wed, 30 Sep 2026 07:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-285

Wed, 30 Sep 2026 04:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-285

Tue, 29 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 29 Sep 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-285

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description Sandbox escape in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Title Sandbox escape in the Graphics component
References

Subscriptions

Mozilla Firefox Thunderbird
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-01T15:36:07.564Z

Reserved: 2026-09-26T19:15:31.053Z

Link: CVE-2026-100775

cve-icon Vulnrichment

Updated: 2026-10-01T15:35:28.426Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T13:17:42.083

Modified: 2026-10-06T14:36:05.190

Link: CVE-2026-100775

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T22:15:13Z

Weaknesses