CVE-2021-38991
HIGHCVSS 7.8/10EPSS 0.27%
Last modified
CVE-2021-38991 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Vios | 3.1 |
| Ibm | Aix | 7.0 |
| Ibm | Aix | 7.1 |
| Ibm | Aix | 7.2 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/212953VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6538952Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/212953VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6538952Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38991?
IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.
How severe is CVE-2021-38991?
CVE-2021-38991 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38991?
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-2021-38991?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST