UBUNTU-CVE-2026-87293: Medium severity ubuntu/openjdk-8 vulnerability
Vulnerability in Oracle Java SE (component: RMI). Supported versions that are affected are Oracle Java SE: 8u503 and 8u503-perf; 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. While the vulnerability is in Oracle Java SE, attacks may significantly impact additional products (scope change). 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 only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~16.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~18.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~20.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~22.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~24.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~26.10.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~26.04.1
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
An attacker does not need authentication or user interaction, but must have network access and be able to supply data to RMI component APIs. The described example is supplying crafted data through a web service; untrusted Java Web Start applications and untrusted applets are not required.
What could a successful attack allow?
A successful attack may allow unauthorized reading of a subset of accessible data and unauthorized update, insertion, or deletion of some accessible data. The impact can extend to additional products because the vulnerability has scope change.
Which runtimes and Ubuntu packages should be reviewed?
The affected Oracle runtimes identified are Java SE 8u503, Java SE 8u503-perf, and GraalVM Enterprise Edition 21.3.19.1.1. The Ubuntu advisory lists openjdk-8, openjdk-lts, openjdk-17, openjdk-21, openjdk-17-crac, openjdk-21-crac, openjdk-9, and openjdk-13 for review.