CVE-2018-14564: An issue was discovered in libthulac.so in THULAC through 2018-02-25

Q: How do I fix CVE-2018-14564?

thulac: upgrade to newer than 2018-02-25. Exact commands for each OS are on this page.

Q: Is CVE-2018-14564 being exploited?

CVE-2018-14564 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-14564 affect?

CVE-2018-14564 affects thulac. Severity is critical (CVSS 9.8). An issue was discovered in libthulac.so in THULAC through 2018-02-25. A SEGV can occur in NGramFeature::find_bases in include/cb_ngram_feature.h.

Q: How urgent is CVE-2018-14564?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-14564 is a critical-severity flaw (CVSS 9.8) affecting thulac. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in libthulac.so in THULAC through 2018-02-25. A SEGV can occur in NGramFeature::find_bases in include/cb_ngram_feature.h.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-07-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: thunlp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-23 14:29 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

thunlp thulac UPGRADE

Affected: <= 2018-02-25

Fixed in: newer than 2018-02-25

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thulac || rpm -q thulac || thulac --version

2. UPGRADE to newer than 2018-02-25 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade thulac

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thulac

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-14564?

thulac: upgrade to newer than 2018-02-25. Exact commands for each OS are on this page.

Is CVE-2018-14564 being exploited?

CVE-2018-14564 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-14564 affect?

CVE-2018-14564 affects thulac. Severity is critical (CVSS 9.8). An issue was discovered in libthulac.so in THULAC through 2018-02-25. A SEGV can occur in NGramFeature::find_bases in include/cb_ngram_feature.h.

How urgent is CVE-2018-14564?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-14565 CRITICAL 9.8 UPGRADE An issue was discovered in libthulac.so in THULAC through 2018-02-25
CVE-2018-14563 CRITICAL 9.8 UPGRADE An issue was discovered in libthulac.so in THULAC through 2018-02-25
CVE-2018-14562 CRITICAL 9.8 UPGRADE An issue was discovered in libthulac.so in THULAC through 2018-02-25

References

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