CVE-2026-100805: firefox before 157.0.0 (exclusive); +1 more affected products

CVE-2026-100805. CVSS 3.1 base score 7.5 (HIGH, Source advisory). EPSS 0.00222 (percentile 0.11995), scored 19-Oct-2026.

Affected technology

firefox · before 157.0.0 (exclusive)
mozilla

thunderbird · before 157.0 (exclusive)
mozilla

Component: Not specified by the source

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

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 19-Oct-2026 17:58 UTC

CWE: CWE-362, CWE-416
CCR priority: 30.1 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H · Source advisory
EPSS: 0.00222 · percentile 0.11995 · 2026-10-19
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-19 17:57:47.606446+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-100805.html