What is CVE-2018-7687?

CVE-2018-7687 is a high-severity vulnerability in Micro Focus Client For Open Enterprise Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2018-05-21.

How severe is CVE-2018-7687?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Micro Focus Client For Open Enterprise Server

CVE-2018-7687

The Micro Focus Client for OES before version 2 SP4 IR8a has a vulnerability that could allow a local attacker to elevate privileges via a buffer overflow in ncfsd.sys.

Vulnerability class: Buffer Overflow

Published 2018-05-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (28.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% 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

Micro Focus Client For Open Enterprise Server — versions 2 SP4 (IR8a)
Microfocus Client — versions 2.0

Weakness classification (CWE)

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

References

Frequently asked questions

What is CVE-2018-7687?: CVE-2018-7687 is a high-severity vulnerability in Micro Focus Client For Open Enterprise Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2018-05-21.
How severe is CVE-2018-7687?: High severity. CVSS v3 base score is 7.8 out of 10.