CVE-2025-11419: Red Hat build of Keycloak 26.0 (exact versions not specified); +3 more affected products

CVE-2025-11419. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00713 (percentile 0.52766), scored 19-Oct-2026.

Affected technology

Product not specified by the source · 0 to before 26.0.16, 26.2.0 to before 26.2.10, 26.4.0 to before 26.4.1
Vendor not specified by the source

Red Hat build of Keycloak 26.0 · Exact affected versions not specified by the source
Red Hat

Red Hat build of Keycloak 26.0.16 · Exact affected versions not specified by the source
Red Hat

Red Hat build of Keycloak 26.2 · Exact affected versions not specified by the source
Red Hat

Red Hat build of Keycloak 26.2.10 · Exact affected versions not specified by the source
Red Hat

Component: Not specified by the source

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

What an attacker can do

An unauthenticated remote attacker can cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests to exhaust server CPU resources, making the service unavailable. Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 20-Oct-2026 01:47 UTC

CWE: CWE-770
CCR priority: 30.2 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00713 · percentile 0.52766 · 2026-10-19
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-20 01:44:01.123206+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-11419.html