CVE-2026-83381
MEDIUM 4.8Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE accessible data. 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 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 13th percentile
Impact if exploited
4.8CVSS 3.1 · MEDIUM
- ConfidentialityLow
- IntegrityLow
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ⚠Complexity: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
Not classified.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References and research data (JSON)
Vendor product assessments
Showing 32 of 299 vendor product statements; 267 omitted. Read the full vendor advisory.
java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-portable?arch=src
- none available: Affected
java-25-openjdk-windows.src as a component of Red Hat build of OpenJDK 25 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-windows?arch=src
- none available: Affected
java-21-openjdk-demo-fastdebug as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-demo-fastdebug
- none available: Affected
java-21-openjdk-javadoc-zip as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-javadoc-zip
- none available: Affected
java-21-openjdk-static-libs-fastdebug as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-static-libs-fastdebug
- none available: Affected
java-25-openjdk-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-devel
- none available: Affected
java-25-openjdk-jmods-fastdebug as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-jmods-fastdebug
- none available: Affected
java-25-openjdk.src as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk?arch=src
- none available: Affected
java-1.7.0-openjdk-javadoc as a component of Red Hat Enterprise Linux 6 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.7.0-openjdk-javadoc
- no fix planned: Out of support scope
java-1.8.0-openjdk-headless-debug as a component of Red Hat Enterprise Linux 6 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-headless-debug
- no fix planned: Out of support scope
java-1.6.0-openjdk-javadoc as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.6.0-openjdk-javadoc
- no fix planned: Out of support scope
java-1.7.0-openjdk.src as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.7.0-openjdk?arch=src
- no fix planned: Out of support scope
java-1.8.0-openjdk-headless as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-headless
- none available: Affected
java-1.8.0-ibm-demo as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-ibm-demo
- none available: Affected
java-1.8.0-openjdk-accessibility-slowdebug as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-accessibility-slowdebug
- none available: Affected
java-1.8.0-openjdk-headless-fastdebug as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-headless-fastdebug
- none available: Affected
java-17-openjdk-demo as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-demo
- none available: Affected
java-17-openjdk-headless-slowdebug as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-headless-slowdebug
- none available: Affected
java-17-openjdk-static-libs as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-static-libs
- none available: Affected
java-21-openjdk-devel-slowdebug as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-devel-slowdebug
- none available: Affected
java-21-openjdk-jmods-slowdebug as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-jmods-slowdebug
- none available: Affected
java-1.8.0-openjdk-demo as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-demo
- none available: Affected
java-1.8.0-openjdk-headless-slowdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-1.8.0-openjdk-headless-slowdebug
- none available: Affected
java-17-openjdk-demo-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-demo-fastdebug
- none available: Affected
java-17-openjdk-javadoc-zip as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-javadoc-zip
- none available: Affected
java-17-openjdk-static-libs-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-17-openjdk-static-libs-fastdebug
- none available: Affected
java-21-openjdk-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-fastdebug
- none available: Affected
java-21-openjdk-src as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-21-openjdk-src
- none available: Affected
java-25-openjdk-crypto-adapter-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-crypto-adapter-fastdebug
- none available: Affected
java-25-openjdk-headless-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-headless-fastdebug
- none available: Affected
java-25-openjdk-src-fastdebug as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk-src-fastdebug
- none available: Affected
java-25-openjdk.src as a component of Red Hat Hardened Images · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/java-25-openjdk?arch=src
- none available: Affected
All CVSS metrics
- MEDIUM 4.8 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - MEDIUM 4.8 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References
Advisories
- https://www.oracle.com/security-alerts/cpuoct2026.html CVE record · oracle · Updated 2026-10-20T21:23:39.066Z
NVD · CVE-2026-83381 · Updated 2026-10-21T18:44:19.627
Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00 - https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-83381.json Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-106299 EUVD · EUVD-2026-106299
Technical & other
- https://access.redhat.com/security/cve/CVE-2026-83381 Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00
- https://bugzilla.redhat.com/show_bug.cgi?id=2557032 Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00
- https://www.cve.org/CVERecord?id=CVE-2026-83381 Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00
- https://nvd.nist.gov/vuln/detail/CVE-2026-83381 Red Hat · CVE-2026-83381 · Updated 2026-10-21T20:43:32+00:00