What is CVE-2018-20588?

CVE-2018-20588 is a medium-severity vulnerability in Otfcc Project, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-12-30.

How severe is CVE-2018-20588?

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

Out-of-bounds Read in Otfcc Project

CVE-2018-20588

lib/support/unicodeconv/unicodeconv.c in libotfcc.a in otfcc v0.10.3-alpha has a buffer over-read.

Vulnerability class: Buffer Overflow

Published 2018-12-30 · 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 (65.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% 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

Otfcc Project — versions 0.10.3

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/caryll/otfcc/issues/59 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20588?: CVE-2018-20588 is a medium-severity vulnerability in Otfcc Project, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-12-30.
How severe is CVE-2018-20588?: Medium severity. CVSS v3 base score is 6.5 out of 10.