CVE-2021-38993
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a...
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 smbcd daemon to cause a denial of service. IBM X-Force ID: 212962.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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 smbcd daemon to cause a denial of service. IBM X-Force ID: 212962.
- Record
CVE-2021-38993- CVSS 3.0
- 6.2 Medium
CVSS:3.0/AV:L/S:U/C:N/PR:N/A:H/AC:L/I:N/UI:N/RL:O/E:U/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-25430
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 smbcd daemon to cause a denial of service. IBM X-Force ID: 212962.
- Record
EUVD-2021-25430- CVSS 3.0
- 6.2 Medium
CVSS:3.0/AV:L/S:U/C:N/PR:N/A:H/AC:L/I:N/UI:N/RL:O/E:U/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3526-xvv9-2p52 No score
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a...
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 smbcd daemon to cause a denial of service. IBM X-Force ID: 212962.
- Record
GHSA-3526-xvv9-2p52- Updated
- 2026-11-02
NVD
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 smbcd daemon to cause a denial of service. IBM X-Force ID: 212962.
- Record
CVE-2021-38993- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 6.2 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-38993 is a medium vulnerability (CVSS 6.2) in Ibm Aix, published February 25, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.