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Status published
Unknown
CVE-2021-4140
It was possible to construct specific XSLT markup that would...
Vulnerability Description
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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CVE-2025-9183
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Affected Vendor
Mozilla
View all reports →Affected Software
Firefox ESR, Firefox, Thunderbird
Vulnerable Versions:
unspecified
Timeline
Official Publish:
December 22nd, 2022
Last Modified:
April 16th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.