PT-2026-40021

CVE-2026-8389

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Published

2026-05-12

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Updated

2026-06-05

Description by

CVSS 2.0
10
High
MetricsAV:N/AC:L/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3
Description JIT miscompilation occurs within the JIT component of the JavaScript Engine. JIT (Just-In-Time) compilation is a method used to improve the execution speed of programs by compiling code during runtime rather than before execution.
Recommendations Update to version 150.0.3.
Exploitability
Exploit
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-168: Improper Handling of Inconsistent Special Elements
CWE-733: Compiler Optimization Removal or Modification of Security-critical Code
CWE-686: Function Call With Incorrect Argument Type
CWE-843: Access of Resource Using Incompatible Type (\'Type Confusion\')
Related identifiers
CVE-2026-8389
BDU:2026-10970
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