SEPTEMBER 17, 2026
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Case File

CVE-2026-84138

MEDIUM · CVSS 6.5 EPSS 0.20%

Source: NVD + CISA KEV + EPSS · Published 2026-09-01 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability in the PDF Viewer component of Firefox can lead to a denial-of-service condition, potentially disrupting user access to the browser. Organizations and users relying on Firefox for PDF viewing should prioritize updating to version 155 or later to mitigate this risk.

CVE
CVE-2026-84138
Severity
MEDIUM
CVSS
6.5
EPSS
0.20%
Firefox

Original NVD Description

Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.

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