Denial-of-service in the Sync component. This vulnerability was fixed in Firefox 158.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

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
158 unaffected ≤ *

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

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=2066094 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-106/ cve-icon cve-icon
History

Tue, 13 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

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

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

Type Values Removed Values Added
Description Denial-of-service in the Sync component. This vulnerability was fixed in Firefox 158.
Title Denial-of-service in the Sync component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-13T14:54:45.740Z

Reserved: 2026-10-13T00:48:58.340Z

Link: CVE-2026-109773

cve-icon Vulnrichment

Updated: 2026-10-13T14:54:25.707Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:28.197

Modified: 2026-10-13T16:19:16.897

Link: CVE-2026-109773

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T16:15:18Z

Weaknesses