What is CVE-2018-1655?

CVE-2018-1655 is a medium-severity vulnerability in IBM Aix, classified under Information Disclosure. CVSS score: 4.0/10. Published 2018-06-22.

How severe is CVE-2018-1655?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Information disclosure in IBM Aix

CVE-2018-1655

IBM AIX 5.3, 6.1, 7.1, and 7.2 contains a vulnerability in the rmsock command that may be used to expose kernel memory. IBM X-Force ID: 144748.

Vulnerability class: Information Disclosure

Published 2018-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (34.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

IBM Aix — versions 7.2, 5.3, 6.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securitytracker.com/id/1041166 (VDB Entry, Third Party Advisory, vdb-entry)
aix.software.ibm.com/aix/efixes/security/rmsock_advisory2.asc (Third Party Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/144748 (VDB Entry, vdb-entry, Vendor Advisory)
www.securityfocus.com/bid/104542 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1655?: CVE-2018-1655 is a medium-severity vulnerability in IBM Aix, classified under Information Disclosure. CVSS score: 4.0/10. Published 2018-06-22.
How severe is CVE-2018-1655?: Medium severity. CVSS v3 base score is 4.0 out of 10.