What is CVE-2017-11571?

CVE-2017-11571 is a high-severity vulnerability in Fontforge, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-23.

How severe is CVE-2017-11571?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Fontforge

CVE-2017-11571

FontForge 20161012 is vulnerable to a stack-based buffer overflow in addnibble (parsettf.c) resulting in DoS or code execution via a crafted otf file.

Vulnerability class: Buffer Overflow

Published 2017-07-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% 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

Fontforge — versions 20161012

Weakness classification (CWE)

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

References

www.debian.org/security/2017/dsa-3958 (vendor-advisory)
github.com/fontforge/fontforge/issues/3087 (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-11571?: CVE-2017-11571 is a high-severity vulnerability in Fontforge, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-23.
How severe is CVE-2017-11571?: High severity. CVSS v3 base score is 7.8 out of 10.