What is CVE-2018-18197?

CVE-2018-18197 is a critical-severity vulnerability in Linuxsampler Libgig, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-10-09.

How severe is CVE-2018-18197?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Linuxsampler Libgig

CVE-2018-18197

An issue was discovered in libgig 4.1.0. There is an operator new[] failure (due to a big pSampleLoops heap request) in DLS::Sampler::Sampler in DLS.cpp.

Vulnerability class: Buffer Overflow

Published 2018-10-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (70.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Linuxsampler Libgig — versions 4.1.0

Weakness classification (CWE)

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

References

github.com/TeamSeri0us/pocs/blob/master/libgig/README-1008.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18197?: CVE-2018-18197 is a critical-severity vulnerability in Linuxsampler Libgig, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-10-09.
How severe is CVE-2018-18197?: Critical severity. CVSS v3 base score is 9.8 out of 10.