What is CVE-2018-1427?

CVE-2018-1427 is a medium-severity vulnerability in IBM Db2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2018-03-22.

How severe is CVE-2018-1427?

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

Buffer overflow in IBM Db2

CVE-2018-1427

IBM GSKit (IBM DB2 for Linux, UNIX and Windows 9.7, 10.1, 10.5, and 11.1) contains several environment variables that a local attacker could overflow and cause a denial of service. IBM X-Force ID: 139072.

Vulnerability class: Buffer Overflow

Published 2018-03-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% 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 Db2 — versions 9.7, 10.1, 10.5
IBM Db2 For Linux, Unix And Windows — versions 9.7, 10.5, 10.1
Linux Kernel
Microsoft Windows

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

exchange.xforce.ibmcloud.com/vulnerabilities/139072 (VDB Entry, Vendor Advisory)
www.ibm.com/support/docview.wss (Vendor Advisory)
www.securityfocus.com/bid/103536 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1041012 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1427?: CVE-2018-1427 is a medium-severity vulnerability in IBM Db2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2018-03-22.
How severe is CVE-2018-1427?: Medium severity. CVSS v3 base score is 6.2 out of 10.