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CVE-2025-11538— Keycloak-server: debug default bind address

Quick assessment

Affected
Keycloak keycloak
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat build of Keycloak是美国红帽（Red Hat）公司的一款用于单点登录的Web应用。 Red Hat build of Keycloak 26.4版本存在安全漏洞，该漏洞源于调试模式不安全地绑定JDWP端口到所有网络接口，可能导致远程代码执行。

CVSS 6.8 · Medium EPSS 0.40% · P31
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I. Basic Information for CVE-2025-11538

Vulnerability Information
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Vulnerability Title
Keycloak-server: debug default bind address
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability exists in Keycloak's server distribution where enabling debug mode (--debug <port>) insecurely defaults to binding the Java Debug Wire Protocol (JDWP) port to all network interfaces (0.0.0.0). This exposes the debug port to the local network, allowing an attacker on the same network segment to attach a remote debugger and achieve remote code execution within the Keycloak Java virtual machine.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1327
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat build of Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat build of Keycloak是美国红帽（Red Hat）公司的一款用于单点登录的Web应用。 Red Hat build of Keycloak 26.4版本存在安全漏洞，该漏洞源于调试模式不安全地绑定JDWP端口到所有网络接口，可能导致远程代码执行。
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
Keycloak keycloak 0 ~ 26.4.4 -
Red Hat Red Hat build of Keycloak 26.4 26.4.4-1 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4 26.4-3 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4 26.4-3 ~ * cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat Red Hat build of Keycloak 26.4.4 - cpe:/a:redhat:build_keycloak:26.4::el9

II. Public POCs for CVE-2025-11538

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III. Intelligence Information for CVE-2025-11538

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Patches & Fixes for CVE-2025-11538 (2)

Vendor Advisories for CVE-2025-11538 (2)

IV. Related Vulnerabilities

Same product: keycloak
Same vendor: Keycloak
Same weakness: CWE-1327

V. Comments for CVE-2025-11538

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