Resource exhaustion in Red Hat Build Of Keycloak 26.0
CVE-2025-11419
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: -0.000
Affected products
- Red Hat Build Of Keycloak 26.0 — versions 26.0.16-2, 26.0-20, 26.0-21
- Red Hat Build Of Keycloak 26.0.16
- Red Hat Build Of Keycloak 26.2 — versions 26.2.10-2, 26.2-11
- Red Hat Build Of Keycloak 26.2.10
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:18254 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:18255 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:18889 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:18890 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2025-11419 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- github.com/keycloak/keycloak/discussions/25209
- github.com/keycloak/keycloak/issues/43020
Frequently asked questions
- What is CVE-2025-11419?
- CVE-2025-11419 is a high-severity vulnerability in Red Hat Build Of Keycloak 26.0, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-12-23.
- How severe is CVE-2025-11419?
- High severity. CVSS v3 base score is 7.5 out of 10.