CVE detail
CVE-2026-21945
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9; Oracle GraalVM Enterprise Edition: 21.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 29.4 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
18 source links · newest first
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21945.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comJan 20, 2026, 10:15 PM - https://cert-portal.siemens.com/productcert/html/ssa-032379.htmlcert-portal.siemens.com
No excerpt available.
Vendor Advisorycert-portal.siemens.comJan 20, 2026, 10:15 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2429927bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/security/cve/CVE-2026-21945access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:4832access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:1606access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0933access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0932access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0931access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0928access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0927access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0901access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0899access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0897access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0895access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0848access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://access.redhat.com/errata/RHSA-2026:0847access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJan 20, 2026, 10:15 PM - https://www.oracle.com/security-alerts/cpujan2026.htmlwww.oracle.com
No excerpt available.
Vendor Advisorywww.oracle.comJan 20, 2026, 10:15 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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