CVE-2021-25827: emby before 4.7.12.0 (exclusive); +1 more affected products

CVE-2021-25827. CVSS 3.1 base score 9.8 (CRITICAL, NVD). EPSS 0.01497 (percentile 0.74021), scored 22-Oct-2026.

Affected technology

emby · before 4.7.12.0 (exclusive)
emby

n/a · n/a
Vendor not specified by the source

Description’s affected range: 4.7.12.0

Component: Not specified by the source

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

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 9.8/10) 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-290
CCR priority: 39.6 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.01497 · percentile 0.74061 · 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-2021-25827.html