CVE-2026-109773
Received Received - Intake

Denial-of-Service in Firefox Sync Component

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

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

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109773
EUVD
EUVD-2026-98533

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 158

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a denial-of-service vulnerability in the Sync component of Firefox. It could allow an attacker to crash the browser by exploiting this flaw.

Impact Analysis

An attacker could exploit this to make Firefox crash repeatedly, disrupting normal use of the browser and potentially leading to loss of unsaved data.

Mitigation Strategies

Update Firefox to version 158 or later to address the denial-of-service vulnerability in the Sync component.

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