CVE-2018-2657

What it is

Vulnerability in the Java SE, JRockit component of Oracle Java SE (subcomponent: Serialization). Supported versions that are affected are Java SE: 6u171 and 7u161; JRockit: R28.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, JRockit. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, JRockit. 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 3.0 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).

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

7.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-01-18 02:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:56 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 7.5% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-01-18 02:29 UTC

Last modified

2026-06-17 01:56 UTC

Exploit probability

7.5% · EPSS, next 30 days

Record status

Modified

Affected

• Oracle Jdk 1.6.0
• Oracle Jdk 1.7.0
• Oracle Jre 1.6.0
• Oracle Jre 1.7.0
• Oracle Jrockit r28.3.16
• Redhat Satellite 5.6
• Redhat Satellite 5.7
• Redhat Satellite 5.8

Attack profile CVSS 3.0 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-2657.md and follow it. Check whether this project is affected by CVE-2018-2657. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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