What is CVE-2017-18199?

CVE-2017-18199 is a medium-severity vulnerability in GNU Libcdio, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-02-24.

How severe is CVE-2017-18199?

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

NULL pointer dereference in GNU Libcdio

CVE-2017-18199

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Published 2018-02-24 · 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: 0.033 (88.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

GNU Libcdio

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

savannah.gnu.org/bugs/ (Exploit, Third Party Advisory)
ftp.gnu.org/gnu/libcdio/libcdio-1.0.0.tar.gz (Vendor Advisory)
access.redhat.com/errata/RHSA-2018:3246 (vendor-advisory)
www.securityfocus.com/bid/103202 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-18199?: CVE-2017-18199 is a medium-severity vulnerability in GNU Libcdio, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-02-24.
How severe is CVE-2017-18199?: Medium severity. CVSS v3 base score is 6.5 out of 10.