CVE-2021-20286
LOWCVSS 2.7/10EPSS 1.11%
Last modified
CVE-2021-20286 is a low-severity vulnerability rated 2.7/10 on the CVSS scale. A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.. EPSS estimates a 1.11% chance of exploitation in the next 30 days.
Description
A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Libnbd | < 1.7.3 |
| Redhat | Enterprise Linux | 8.3.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1934727Issue Tracking, Third Party Advisory
- https://gitlab.com/nbdkit/libnbd/-/commit/fb4440de9cc76e9c14bd3ddf3333e78621f40ad0Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1934727Issue Tracking, Third Party Advisory
- https://gitlab.com/nbdkit/libnbd/-/commit/fb4440de9cc76e9c14bd3ddf3333e78621f40ad0Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20286?
A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.
How severe is CVE-2021-20286?
CVE-2021-20286 has a CVSS score of 2.7/10 (LOW severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20286?
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-2021-20286?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST