P4Verified

CVE-2026-92031: firefox before 140.16.0 (exclusive), from 141.0 (inclusive), before 153.3.0 (exclusive), from 154.0.0 (inclusive)…

CVE-2026-92031 affects firefox-esr. CVSS 3.1 base score 6.5 (MEDIUM, Source advisory). EPSS 0.00327 (percentile 0.23518), scored 2026-10-05. Fixed version: 140.16.0esr-1~deb12u1. Fixed version: 140.16.0esr-1~deb13u1. Fixed version: 140.16.0esr-1. Fixed version: 1:140.16.0esr-1~deb12u1. Fixed version: 1:140.16.0esr-1~deb13u1. Fixed version: 1:153.3.0esr-1.

Affected technology

firefox · before 140.16.0 (exclusive)
mozilla

firefox · from 141.0 (inclusive), before 153.3.0 (exclusive)
mozilla

firefox · from 154.0.0 (inclusive), before 156.0.0 (exclusive)
mozilla

thunderbird · before 140.16.0 (exclusive)
mozilla

thunderbird · from 141.0 (inclusive), before 153.3.0 (exclusive)
mozilla

thunderbird · from 154.0 (inclusive), before 156.0 (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 6.5/10) rates confidentiality impact as high; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-06 17:56:31.144588+00:00

CWE: CWE-200
Product: firefox-esr
CCR priority: 26.1 /100 (P4)
CVSS 3.1: 6.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N · Source advisory
EPSS: 0.00327 · percentile 0.23518 · 2026-10-05
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-06 17:55:17.257073+00:00 UTC
OSV.dev · Source record · observed 2026-10-06 17:58:42.508367+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-92031.html