CVE-2026-16411: firefox before 153.0.0 (exclusive)

CVE-2026-16411. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00493 (percentile 0.41122), scored 20-Oct-2026.

Affected technology

firefox · before 153.0.0 (exclusive)
mozilla

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 21-Oct-2026 16:14 UTC

CWE: CWE-119
CCR priority: 39.3 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
EPSS: 0.00493 · percentile 0.41122 · 2026-10-20
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-21 16:09:05.633125+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-16411.html