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Fencer Vulns
high 8.8

CVE-2016-1977 json

The Machine::Code::decoder::analysis::set_ref function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 3…

published 2016-03-13 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3066

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The Machine::Code::decoder::analysis::set_ref function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code or cause a denial of service (stack memory corruption) via a crafted Graphite smart font.

Patch / fix

  • graphite2 Debian 14, Debian 13, Debian 12 1.3.6-1
  • firefox-esr Debian 14, Debian 13, Debian 12 45.0esr-1

debian advisories DEBIAN-CVE-2016-1977

  • firefox Ubuntu 14.04 LTS 45.0+build2-0ubuntu0.14.04.1
  • graphite2 Ubuntu 14.04 LTS 1.3.6-1ubuntu0.14.04.1
  • graphite2 Ubuntu 16.04 LTS 1.3.6-1ubuntu1
  • thunderbird Ubuntu 14.04 LTS 1:38.7.2+build1-0ubuntu0.14.04.1
  • thunderbird Ubuntu 16.04 LTS 1:38.7.2+build1-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2016-1977

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 38.7.0-1.el5_11
  • thunderbird RHEL 6 38.7.0-1.el6_7
  • thunderbird RHEL 7 38.7.0-1.el7_2
  • firefox RHEL 5 38.7.0-1.el5_11
  • firefox RHEL 6 38.7.0-1.el6_7
  • firefox RHEL 7 38.7.0-1.el7_2

red hat advisories RHSA-2016:0460RHSA-2016:0373

  • mozilla-nss SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 3.20.2-28.1
  • mozilla-nspr SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 4.12-24.1
  • MozillaFirefox SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 38.7.0esr-37.3
  • mozilla-nss SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 3.20.2-40.1
  • mozilla-nspr SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 4.12-12.1
  • MozillaFirefox SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 38.7.0esr-63.3
  • mozilla-nss SLES 11 SP2-LTSS 3.20.2-20.1
  • mozilla-nspr SLES 11 SP2-LTSS 4.12-19.1

suse advisories SUSE-SU-2016:0909-1SUSE-SU-2016:0777-1SUSE-SU-2016:0727-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1
  • MozillaThunderbird Package Hub 12 45.2-6.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1openSUSE-SU-2016:1769-1openSUSE-SU-2016:1778-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-1977 updated cvss 6.8

graphite2: multiple font parsing vulnerabilities (Mozilla MFSA 2016-37)

  • Red Hat Enterprise Linux (v. 5 server) firefox 38.7.0-1.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 38.7.0-1.el7_2, thunderbird 38.7.0-1.el7_2 Red Hat Enterprise Linux Client Optional (v. 7) firefox 38.7.0-1.el7_2 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 38.7.0-1.el5_11, thunderbird 38.7.0-1.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 38.7.0-1.el6_7, thunderbird 38.7.0-1.el6_7 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 38.7.0-1.el6_7
    +1 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 38.7.0-1.el6_7
    fixed: vendor fix RHSA-2016:0373
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 38.7.0-1.el5_11
    fixed: vendor fix RHSA-2016:0460
  • Red Hat Enterprise Linux Server (v. 6) firefox 38.7.0-1.el6_7 Red Hat Enterprise Linux Server (v. 7) firefox 38.7.0-1.el7_2 Red Hat Enterprise Linux Server Optional (v. 6) firefox 38.7.0-1.el6_7, thunderbird 38.7.0-1.el6_7 Red Hat Enterprise Linux Server Optional (v. 7) firefox 38.7.0-1.el7_2, thunderbird 38.7.0-1.el7_2 Red Hat Enterprise Linux Workstation (v. 6) firefox 38.7.0-1.el6_7, thunderbird 38.7.0-1.el6_7 Red Hat Enterprise Linux Workstation (v. 7) firefox 38.7.0-1.el7_2, thunderbird 38.7.0-1.el7_2
    +2 more products
    Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 38.7.0-1.el6_7 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 38.7.0-1.el7_2
    fixed: vendor fix RHSA-2016:0373

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.91% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

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

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.