CVE-2021-33806

Description

The BDew BdLib library before 1.16.1.7 for Minecraft allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of its use of Java serialization.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 6.86% Top 10%
Vendor Advisory bdew.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bdew.net release notes vendor advisory
https://www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330 third party advisory product
https://vuln.ryotak.me/advisories/46 third party advisory
https://github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-33806?
CVE-2021-33806 has been scored as a critical severity vulnerability.
How to fix CVE-2021-33806?
To fix CVE-2021-33806, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33806 being actively exploited in the wild?
It is possible that CVE-2021-33806 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.