CVE-2023-23605: firefox before 109.0 (exclusive); +5 more affected products

CVE-2023-23605. CVSS 3.1 base score 8.8 (HIGH, NVD). EPSS 0.00702 (percentile 0.52703), scored 22-Oct-2026.

Affected technology

firefox · before 109.0 (exclusive)
mozilla

firefox esr · before 102.7 (exclusive)
mozilla

thunderbird · before 102.7 (exclusive)
mozilla

Firefox · unspecified to before 109
Mozilla

Firefox ESR · unspecified to before 102.7
Mozilla

Thunderbird · unspecified to before 102.7
Mozilla

Component: Not specified by the source

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

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

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-787
CCR priority: 35.4 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00702 · percentile 0.52773 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2023-23605.html