CVE-2021-38989
MEDIUMCVSS 5.5/10EPSS 0.21%
Last modified
CVE-2021-38989 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the AIX kernel to cause a denial of service. IBM X-Force ID: 212951.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the AIX kernel to cause a denial of service. IBM X-Force ID: 212951.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Vios | >= 3.1.1, < 3.1.1.60 |
| Ibm | Vios | >= 3.1.2, < 3.1.2.40 |
| Ibm | Vios | >= 3.1.3, < 3.1.3.20 |
| Ibm | Aix | >= 7.1.5.0, <= 7.1.5.36 |
| Ibm | Aix | >= 7.2.4.0, <= 7.2.4.4 |
| Ibm | Aix | 7.2.5.0 |
| Ibm | Aix | 7.2.5.1 |
| Ibm | Aix | 7.2.5.100 |
| Ibm | Aix | 7.3.0.0 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/212951VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6561277Mitigation, Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/212951VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6561277Mitigation, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38989?
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the AIX kernel to cause a denial of service. IBM X-Force ID: 212951.
How severe is CVE-2021-38989?
CVE-2021-38989 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38989?
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-2021-38989?
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