What is CVE-2023-28462?

CVE-2023-28462 is a critical-severity vulnerability in Oracle Jdk, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-03-30.

How severe is CVE-2023-28462?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Oracle Jdk

CVE-2023-28462

A JNDI rebind operation in the default ORB listener in Payara Server 4.1.2.191 (Enterprise), 5.20.0 and newer (Enterprise), and 5.2020.1 and newer (Community), when Java 1.8u181 and earlier is used, allows remote attackers to load malicious code on the server once a JNDI directory scan is performed.

Vulnerability class: Insecure Deserialization

Published 2023-03-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (60.2th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Oracle Jdk — versions 1.8.0
Payara Server

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

blog.payara.fish/vulnerability-affecting-server-environments-on-java-1.8-on-upd… (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2023-28462?: CVE-2023-28462 is a critical-severity vulnerability in Oracle Jdk, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-03-30.
How severe is CVE-2023-28462?: Critical severity. CVSS v3 base score is 9.8 out of 10.