What is CVE-2018-18481?

CVE-2018-18481 is a medium-severity vulnerability in Libopencad Project, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-10-18.

How severe is CVE-2018-18481?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Out-of-bounds Read in Libopencad Project

CVE-2018-18481

A heap-based buffer over-read exists in libopencad 0.2.0 in the ReadCHAR function in lib/dwg/io.cpp, resulting in an application crash.

Vulnerability class: Buffer Overflow

Published 2018-10-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Libopencad Project — versions 0.2.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/sandyre/libopencad/issues/43 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18481?: CVE-2018-18481 is a medium-severity vulnerability in Libopencad Project, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-10-18.
How severe is CVE-2018-18481?: Medium severity. CVSS v3 base score is 6.5 out of 10.