What is CVE-2022-47990?

CVE-2022-47990 is a medium-severity vulnerability in IBM Aix, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2023-01-18.

How severe is CVE-2022-47990?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in IBM Aix

CVE-2022-47990

IBM AIX 7.1, 7.2, 7.3 and VIOS , 3.1 could allow a non-privileged local user to exploit a vulnerability in X11 to cause a buffer overflow that could result in a denial of service or arbitrary code execution. IBM X-Force ID: 243556.

Vulnerability class: Buffer Overflow

Published 2023-01-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

IBM Aix — versions 7.2, 7.3, 7.1
IBM Vios — versions 3.1

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.ibm.com/support/pages/node/6855827 (vendor-advisory, Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/243556 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2022-47990?: CVE-2022-47990 is a medium-severity vulnerability in IBM Aix, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2023-01-18.
How severe is CVE-2022-47990?: Medium severity. CVSS v3 base score is 6.2 out of 10.