CVE-2026-0884
CRITICAL
2026-01-13
[email protected]
9.8
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
3
Patch Released
Apr 09, 2026 - 14:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 13, 2026 - 14:16 nvd
CRITICAL 9.8
Description
Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
Analysis
Firefox JavaScript engine has a use-after-free vulnerability. Affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147 and < 140.7.
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Remediation
Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.
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Priority Score
49
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +49
POC: 0
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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