SEPTEMBER 7, 2026
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Case File

CVE-2026-16363

CRITICAL · CVSS 9.8 EPSS 0.44%

Source: NVD + CISA KEV + EPSS · Published 2026-07-21 · Last synced 2026-08-20

CyberRota Analysis

AI-Generated

A critical vulnerability exists in the JavaScript: WebAssembly component of Firefox and Java, allowing for potential JIT miscompilation that could lead to arbitrary code execution. Users of affected versions, particularly those running Firefox and Thunderbird prior to the specified updates, should prioritize applying the latest patches to mitigate the risk of exploitation. Organizations relying on these products should assess their environments immediately to prevent potential breaches.

CVE
CVE-2026-16363
Severity
CRITICAL
CVSS
9.8
EPSS
0.44%
Firefox Java

Original NVD Description

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-84642 HIGH CVE-2026-84641 HIGH CVE-2026-84640 HIGH CVE-2026-84639 CRITICAL CVE-2026-84637 CRITICAL CVE-2026-84145 HIGH