CVE-2021-3889
HIGHCVSS 8.1/10EPSS 1.20%
Last modified
CVE-2021-3889 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. libmobi is vulnerable to Use of Out-of-range Pointer Offset. EPSS estimates a 1.20% chance of exploitation in the next 30 days.
Description
libmobi is vulnerable to Use of Out-of-range Pointer Offset
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libmobi Project | Libmobi | < 0.8 |
References
- https://github.com/bfabiszewski/libmobi/commit/bec783e6212439a335ba6e8df7ab8ed610ca9a21Patch, Third Party Advisory
- https://huntr.dev/bounties/efb3e261-3f7d-4a45-8114-e0ace6b21516Exploit, Patch, Third Party Advisory
- https://github.com/bfabiszewski/libmobi/commit/bec783e6212439a335ba6e8df7ab8ed610ca9a21Patch, Third Party Advisory
- https://huntr.dev/bounties/efb3e261-3f7d-4a45-8114-e0ace6b21516Exploit, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3889?
libmobi is vulnerable to Use of Out-of-range Pointer Offset
How severe is CVE-2021-3889?
CVE-2021-3889 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3889?
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-2021-3889?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST