Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

No CVSS v4.0

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
153.6 unaffected ≤ 153.*
159 unaffected ≤ *

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Advisories

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Fixes

Solution

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Workaround

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References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2079686 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-118/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-120/ cve-icon cve-icon
History

Tue, 27 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
CWE-193

Tue, 27 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
Title Incorrect boundary conditions in the Layout: Text and Fonts component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-27T14:05:52.643Z

Reserved: 2026-10-27T14:05:52.469Z

Link: CVE-2026-117991

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-27T14:16:57.020

Modified: 2026-10-27T15:00:49.240

Link: CVE-2026-117991

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T16:30:07Z

Weaknesses