CVE-2026-34282
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u481-perf, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26; Oracle GraalVM for JDK: 17.0.18 and 21.0.10; Oracle GraalVM Enterprise Edition: 21.3.17. 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 can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also 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. 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).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.64% probability · 50th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-835
- Affected
- oracle/jre · oracle/jdk · oracle/graalvm · oracle/graalvm for jdk
- Source
- secalert_us@oracle.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.oracle.com/security-alerts/cpuapr2026.htmlVendor Advisory
- https://access.redhat.com/errata/RHSA-2026:11403
- https://access.redhat.com/errata/RHSA-2026:11655
- https://access.redhat.com/errata/RHSA-2026:11822
- https://access.redhat.com/errata/RHSA-2026:11829
- https://access.redhat.com/errata/RHSA-2026:11902
- https://access.redhat.com/errata/RHSA-2026:22328
- https://access.redhat.com/errata/RHSA-2026:9254
- https://access.redhat.com/errata/RHSA-2026:9686
- https://access.redhat.com/errata/RHSA-2026:9687
- https://access.redhat.com/errata/RHSA-2026:9688
- https://access.redhat.com/errata/RHSA-2026:9689
- https://access.redhat.com/errata/RHSA-2026:9691
- https://access.redhat.com/errata/RHSA-2026:9693
- https://access.redhat.com/errata/RHSA-2026:9694
- https://access.redhat.com/security/cve/CVE-2026-34282
- https://bugzilla.redhat.com/show_bug.cgi?id=2460044
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34282.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.