CVE-2025-10531: firefox before 143.0 (exclusive); +1 more affected products

CVE-2025-10531. CVSS 3.1 base score 5.4 (MEDIUM, Source advisory). EPSS 0.00274 (percentile 0.18476), scored 17-Oct-2026.

Affected technology

firefox · before 143.0 (exclusive)
mozilla

thunderbird · before 143.0 (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 5.4/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 18-Oct-2026 22:52 UTC

CWE: CWE-288
CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N · Source advisory
EPSS: 0.00274 · percentile 0.18476 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-18 22:50:08.248207+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-10531.html