Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

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No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mozilla Firefox affected
Version Status Constraints
153.5 unaffected ≤ 153.*
158 unaffected ≤ *
Mozilla Thunderbird affected
Version Status Constraints
153.5 unaffected ≤ 153.*
158 unaffected ≤ *

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2061784 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-106/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-108/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-109/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-110/ cve-icon cve-icon
History

Tue, 13 Oct 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-457

Tue, 13 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-457

Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References

Tue, 13 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Description Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Sandbox escape due to uninitialized memory in the DOM: Web Serial component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-13T18:17:08.464Z

Reserved: 2026-10-13T00:29:50.232Z

Link: CVE-2026-109745

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:25.360

Modified: 2026-10-13T19:18:38.620

Link: CVE-2026-109745

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T21:00:17Z

Weaknesses

No weakness.