What is CVE-2018-12102?

CVE-2018-12102 is a medium-severity vulnerability in Md4c Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-06-11.

How severe is CVE-2018-12102?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2018-12102 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Md4c Project

CVE-2018-12102

md4c 0.2.6 has a NULL pointer dereference in the function md_process_line in md4c.c, related to ctx->current_block.

Published 2018-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Md4c Project — versions 0.2.6

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

Edward-L/my-cve-list

References

github.com/Edward-L/fuzzing-pocs/tree/master/md4c (Third Party Advisory, Issue Tracking)
github.com/mity/md4c/issues/41 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-12102?: CVE-2018-12102 is a medium-severity vulnerability in Md4c Project, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-06-11.
How severe is CVE-2018-12102?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2018-12102 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.