What is CVE-2021-32075?

CVE-2021-32075 is a critical-severity vulnerability in Re-Logic Terraria, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-05-24.

How severe is CVE-2021-32075?

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

Deserialization in Re-Logic Terraria

CVE-2021-32075

Re-Logic Terraria before 1.4.2.3 performs Insecure Deserialization.

Vulnerability class: Insecure Deserialization

Published 2021-05-24 · 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: 0.018 (77.7th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Re-Logic Terraria

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

twitter.com/relogicgames (Third Party Advisory)
vuln.ryotak.me/advisories/42 (Third Party Advisory)
store.steampowered.com/news/app/105600/view/3062989030626131236 (Third Party Advisory, Release Notes)
terraria.fandom.com/wiki/1.4.2.3 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2021-32075?: CVE-2021-32075 is a critical-severity vulnerability in Re-Logic Terraria, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-05-24.
How severe is CVE-2021-32075?: Critical severity. CVSS v3 base score is 9.8 out of 10.