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CVE-2019-16707

23
FAUCET Score

CVE-2019-16707 describes an invalid read vulnerability in Hunspell 1.7.0's SuggestMgr::leftcommonsubstring function, affecting Fedora and Hunspell projects. With a CVSS score of 6.5 (Medium), this vulnerability can be triggered remotely with low attack complexity, requiring user interaction, and could lead to a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.0CPE matchmatch criteria
cpe:2.3:a:hunspell_project:hunspell:1.7.0:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 86th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia msrc
Product: 17022-16823Fixed in: 1.7.0-7
microsoftpatch availablevia msrc
Product: cbl2 hunspell 1.7.0-7 on CBL Mariner 2.0Fixed in: 1.7.0-7
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: hunspell-0:1.3.2-16.el7
View patch

Vendor Advisories (2)

microsoft2019-Sep/CVE-2019-16707Moderate

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

Sep 10, 2019
redhatCVE-2019-16707Low

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

Mar 18, 2019

References

github.com / butterflyhack/hunspell-crash
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/24NTBHK2QNYKSBMJI34WEU5MHS3H2FAI
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/D2YOYFI36IWKABNGFTWXCH7TTGAFODH6
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/LNTSVWI4SWBQL6XMXNGEH7EAQ45WN63G
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UD4AJ4M74VT3I6L37E4P5DNYZYBZIOVM