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CVE WatchOct 27, 2026

CVE-2026-117997

Sandbox escape due to use-after-free in the Widget component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Oct 27, 2026 · Last modified: Oct 27, 2026

EPSS · 30d

Not enough EPSS history yet.

Technical description

Sandbox escape due to use-after-free in the Widget component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

Official references
Related CVEs

No related CVEs by CWE or product.