CVE-2026-83395: oracle corporation oracle graalvm enterprise edition Improper Access Control
Vulnerability summary
CVE-2026-83395 is a medium (CVSS 6.5) Improper Access Control vulnerability in oracle corporation oracle graalvm enterprise edition. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 25.8% of scored vulnerabilities.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 20-10-2026PublishedVulnerability first disclosed.
- 22-10-2026Last modifiedVulnerability information updated.
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: 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. 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 update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data and unauthorized ability to cause a partial denial of service (partial 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 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).
CVSS metrics
5 scores · 5 sources · 1 version- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
26%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu12 products
- openjdk-13All versions (No fix recorded)
- openjdk-16All versions (No fix recorded)
- openjdk-17All versions (No fix recorded)
- openjdk-17-cracAll versions (No fix recorded)
- openjdk-18All versions (No fix recorded)
Debian4 products
- openjdk-17All versions (No fix recorded) | < 17.0.21+9-1~deb12u1
- openjdk-21All versions (No fix recorded) | < 21.0.13+9-1~deb13u2 | < 21.0.13+9-1
- openjdk-25All versions (No fix recorded) | < 25.0.5+8-1~deb13u1 | < 25.0.5+8-1
- openjdk-27All versions (No fix recorded)
Oracle corporation3 products
- oracle graalvm enterprise edition21.3.19.1.1
- oracle graalvm for jdk17.0.20.1 | 21.0.12.1
- oracle java se8u503 | 8u503-perf | 11.0.32.1 | 17.0.20.1 | 21.0.12.1 | 25.0.4.1 | 27
Alpine2 products
- openjdk17< 17.0.21.0.3_p1-r0
- openjdk25< 25.0.5.0.3_p1-r0
4 vendors · 21 products
References
6 links- www.oracle.com/security-alerts/cpuoct2026.htmlVendor Advisory