P2Verified

CVE-2025-2857

CVE-2025-2857. CVSS base score 10.0 (CRITICAL, Source advisory). EPSS 0.01937 (percentile 0.79392), scored 2026-10-04.

Affected technology

firefox · before 136.0.4 (exclusive)
mozilla

firefox · before 115.21.1 (exclusive)
mozilla

firefox · from 128.1.0 (inclusive), before 128.8.1 (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 rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-05 23:10:20.529156+00:00

CWE: CWE-668
CCR priority: 75.0 /100 (P2)
CVSS: 10.0 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · Source advisory
EPSS: 0.01937 · percentile 0.79392 · 2026-10-04
KEV: no
Exploit signals: Source reports exploitation.
Signal evidence: Source advisory: source reports exploitation (exploited in the wild).

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-05 23:09:08.830529+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-2857.html