---
title: "CVE-2020-2830\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2020-2830?format=md
keywords: index, follow
---

# CVE-2020-2830

Publication date 15 April 2020

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2020-2830?format=md#impact-score)

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## Description

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE
(component: Concurrency). Supported versions that are affected are Java SE:
7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
multiple protocols to compromise Java SE, Java SE Embedded. Successful
attacks of this vulnerability can result in unauthorized ability to cause a
partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note:
Applies to client and server deployment of Java. This vulnerability can be
exploited through sandboxed Java Web Start applications and sandboxed Java
applets. It can also be exploited by supplying data to APIs in the
specified Component without using sandboxed Java Web Start applications or
sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score
5.3 (Availability impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openjdk-14 | 20.04 LTS focal | Not in release |
| 19.10 eoan | Ignored end of life |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| openjdk-7 | 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| openjdk-8 | 20.04 LTS focal | Not affected |
| 19.10 eoan | Fixed 8u252-b09-1~19.10 |
| 18.04 LTS bionic | Fixed 8u252-b09-1~18.04 |
| 16.04 LTS xenial | Fixed 8u252-b09-1~16.04 |
| 14.04 LTS trusty | Not in release |
| openjdk-lts | 20.04 LTS focal | Fixed 11.0.7+10-2ubuntu1 |
| 19.10 eoan | Fixed 11.0.7+10-2ubuntu2~19.10 |
| 18.04 LTS bionic | Fixed 11.0.7+10-2ubuntu2~18.04 |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-2830)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-2830)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-2830)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-2830)

### Related Ubuntu Security Notices (USN)

+ [USN-4337-1](https://usn.ubuntu.com/USN-4337-1)
+ OpenJDK vulnerabilities
+ 22 April 2020

### Other references

* <https://www.oracle.com/security-alerts/cpuapr2020.html>
* <https://www.cve.org/CVERecord?id=CVE-2020-2830>