CVE-2021-33806
CRITICALCVSS 9.8/10EPSS 2.98%
Last modified
CVE-2021-33806 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.98% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bdew | Bdlib | < 1.16.1.7 |
References
- https://bdew.netRelease Notes, Vendor Advisory
- https://github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297Patch, Third Party Advisory
- https://vuln.ryotak.me/advisories/46Third Party Advisory
- https://www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330Product, Third Party Advisory
- https://bdew.netRelease Notes, Vendor Advisory
- https://github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297Patch, Third Party Advisory
- https://vuln.ryotak.me/advisories/46Third Party Advisory
- https://www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330Product, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33806?
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.
How severe is CVE-2021-33806?
CVE-2021-33806 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.98% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33806?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-33806?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST