CVE-2021-39230
MEDIUMCVSS 6.5/10EPSS 0.74%
Last modified
CVE-2021-39230 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Butter is a system usability utility. Due to a kernel error the JPNS kernel is being discontinued. EPSS estimates a 0.74% chance of exploitation in the next 30 days.
Description
Butter is a system usability utility. Due to a kernel error the JPNS kernel is being discontinued. Affected users are recommend to update to the Trinity kernel. There are no workarounds.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Butter Project | Butter | < 1.5 |
References
- https://github.com/FrankEnderman/Butter/commit/a4fd717e848306f04f2823ea5f617e4da9f5bbdbPatch, Third Party Advisory
- https://github.com/FrankEnderman/Butter/security/advisories/GHSA-4538-4g86-xf6jThird Party Advisory
- https://github.com/FrankEnderman/Butter/commit/a4fd717e848306f04f2823ea5f617e4da9f5bbdbPatch, Third Party Advisory
- https://github.com/FrankEnderman/Butter/security/advisories/GHSA-4538-4g86-xf6jThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39230?
Butter is a system usability utility. Due to a kernel error the JPNS kernel is being discontinued. Affected users are recommend to update to the Trinity kernel. There are no workarounds.
How severe is CVE-2021-39230?
CVE-2021-39230 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39230?
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-2021-39230?
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