CVE-2021-33790

CRITICAL

RebornCore < 3.13.8 - Remote Code Execution via Untrusted Data Deserialization

Title source: llm
STIX 2.1

Description

The RebornCore library before 4.7.3 allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of reborncore.common.network.ExtendedPacketBuffer. An attacker can instantiate any class on the classpath with any data. A class usable for exploitation might or might not be present, depending on what Minecraft modifications are installed.

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://vuln.ryotak.me/advisories/45
Product, Third Party Advisory x_refsource_misc
https://www.curseforge.com/minecraft/mc-mods/reborncore

Scores

CVSS v3 9.8
EPSS 0.0284
EPSS Percentile 84.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-502
Status published
Products (1)
techreborn/reborncore < 3.13.8
Published May 31, 2021
Tracked Since Feb 18, 2026