What is CVE-2016-1969?

CVE-2016-1969 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-03-13.

How severe is CVE-2016-1969?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Mozilla Firefox

CVE-2016-1969

The setAttr function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.6.1, allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact via a crafted Graphite smart font.

Vulnerability class: Buffer Overflow

Published 2016-03-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (75.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Mozilla Firefox — versions 38.0, 38.0.1, 38.0.5
Sil Graphite2

Weakness classification (CWE)

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

References

bugzilla.mozilla.org/show_bug.cgi
www.securitytracker.com/id/1035215 (vdb-entry)
security.gentoo.org/glsa/201605-06 (vendor-advisory)
www.mozilla.org/security/announce/2016/mfsa2016-38.html (Vendor Advisory)

Frequently asked questions

What is CVE-2016-1969?: CVE-2016-1969 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-03-13.
How severe is CVE-2016-1969?: High severity. CVSS v3 base score is 8.8 out of 10.