What is CVE-2023-33496?

CVE-2023-33496 is a critical-severity vulnerability in Xxl-Rpc Project, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-06-07.

How severe is CVE-2023-33496?

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

Deserialization in Xxl-Rpc Project

CVE-2023-33496

xxl-rpc v1.7.0 was discovered to contain a deserialization vulnerability via the component com.xxl.rpc.core.remoting.net.impl.netty.codec.NettyDecode#decode.

Vulnerability class: Insecure Deserialization

Published 2023-06-07 · 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: 0.010 (62.8th percentile), scored 2026-10-05.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Xxl-Rpc Project

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/edirc-wong/record/blob/main/deserialization_vulnerability_report.md (Exploit)

Frequently asked questions

What is CVE-2023-33496?: CVE-2023-33496 is a critical-severity vulnerability in Xxl-Rpc Project, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-06-07.
How severe is CVE-2023-33496?: Critical severity. CVSS v3 base score is 9.8 out of 10.