CVE-2025-11419— Keycloak: keycloak tls client-initiated renegotiation denial of service
I. Basic Information for CVE-2025-11419
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Keycloak: keycloak tls client-initiated renegotiation denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keycloak是Keycloak开源的一种开源身份和访问管理解决方案。 Keycloak存在安全漏洞，该漏洞源于未限制TLS 1.2客户端重协商请求，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | - | 0 ~ 26.0.16 | - | |
| Red Hat | Red Hat build of Keycloak 26.0 | 26.0.16-2 ~ * | cpe:/a:redhat:build_keycloak:26.0::el9 | |
| Red Hat | Red Hat build of Keycloak 26.0 | 26.0-20 ~ * | cpe:/a:redhat:build_keycloak:26.0::el9 | |
| Red Hat | Red Hat build of Keycloak 26.0 | 26.0-21 ~ * | cpe:/a:redhat:build_keycloak:26.0::el9 | |
| Red Hat | Red Hat build of Keycloak 26.0.16 | - | cpe:/a:redhat:build_keycloak:26.0 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2.10-2 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-11 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-11 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2.10 | - | cpe:/a:redhat:build_keycloak:26.2::el9 |
II. Public POCs for CVE-2025-11419
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-11419
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same weakness: CWE-770
- CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42189
Russh: Pre-auth DoS via unbounded allocation in keyboard-int - CVE-2026-42793
Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali
V. Comments for CVE-2025-11419
No comments yet