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Fencer Vulns
medium 6.5

CVE-2019-16707 json

Hunspell 1.7.0 has an invalid read operation in SuggestMgr::leftcommonsubstring in suggestmgr.cxx.

published 2019-09-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7257

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

Hunspell 1.7.0 has an invalid read operation in SuggestMgr::leftcommonsubstring in suggestmgr.cxx.

Patch / fix

  • hunspell Debian 14, Debian 13, Debian 12 1.7.0-3

debian advisories DEBIAN-CVE-2019-16707

  • hunspell RHEL 7 1.3.2-16.el7

red hat advisories RHSA-2020:3971

  • hunspell SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.3.2-19.3.1
  • hunspell SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1 1.6.2-3.3.7

suse advisories SUSE-SU-2020:2967-1SUSE-SU-2020:2966-1

  • hunspell openSUSE Tumbleweed 1.7.0-2.6
  • hunspell openSUSE Leap 15.2 1.6.2-lp152.4.3.1
  • hunspell openSUSE Leap 15.1 1.6.2-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:10851-1openSUSE-SU-2020:1719-1openSUSE-SU-2020:1717-1

  • hunspell Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 1.7.0-r1
  • hunspell Alpine 3.9, Alpine 3.8 1.6.2-r2
  • qt6-qtwebengine Alpine 3.24, Alpine 3.23, Alpine 3.22 6.8.3-r1

alpine advisories ALPINE-CVE-2019-16707

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2019-16707 updated cvss 5.8

hunspell: out-of-bounds read in SuggestMgr::leftcommonsubstring in suggestmgr.cxx

  • Red Hat Enterprise Linux 6 hunspell
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux Client (v. 7) hunspell 1.3.2-16.el7 Red Hat Enterprise Linux Client Optional (v. 7) hunspell-devel 1.3.2-16.el7, hunspell-debuginfo 1.3.2-16.el7 Red Hat Enterprise Linux ComputeNode (v. 7) hunspell 1.3.2-16.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) hunspell-devel 1.3.2-16.el7, hunspell-debuginfo 1.3.2-16.el7 Red Hat Enterprise Linux Server (v. 7) hunspell 1.3.2-16.el7 Red Hat Enterprise Linux Workstation (v. 7) hunspell 1.3.2-16.el7
    fixed: vendor fix RHSA-2020:3971
  • Red Hat Enterprise Linux 8 hunspell
    not affected: vulnerable code not present

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

1.65% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/butterflyhack/hunspell-crash referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/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.