CVE-2018-18751

CRITICALNVD 9.89.8—Trending — 5 sources updated this week

9.8

An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 68.4%
KEV: Not listed

Published

October 29, 2018

Last Modified

November 21, 2024

References (16)

cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:3643
cve@mitrehttps://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree
cve@mitrehttps://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
cve@mitrehttps://usn.ubuntu.com/3815-1/
cve@mitrehttps://usn.ubuntu.com/3815-2/
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3643
af854a3a-2127-422b-91ae-364da2661108https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree
af854a3a-2127-422b-91ae-364da2661108https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3815-1/

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libgettextpo0 (0.19.7-2ubuntu3.1) @ xenial	2026-05-28	ubuntu
ubuntu	gettext (0.18.1.1-5ubuntu3.1) @ precise	2026-05-28	ubuntu
redhat	gettext-0:0.19.8.1-3.el7_6	2020-07-07	redhat
redhat	gettext-0:0.19.8.1-3.el7_7	2020-06-12	redhat
redhat	gettext-0:0.19.8.1-3.el7	2020-03-31	redhat
redhat	gettext-0:0.19.8.1-17.el8	2019-11-05	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-415Double Free

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 01:36 UTCEG score recompute
2026-05-28 01:36 UTCVendor advisory
2026-05-28 01:36 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 23:13 UTCOSV refresh
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-18751?

CVE-2018-18751 is a critical vulnerability published on October 29, 2018. An issue was discovered in GNU gettext 0.19.8. There is a double free in defaultaddmessage in read-catalog.c, related to an invalid free in pogramparse in po-gram-gen.y, as demonstrated by lt-msgfmt.

When was CVE-2018-18751 disclosed?

CVE-2018-18751 was first published in the National Vulnerability Database on October 29, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-18751 actively exploited?

CVE-2018-18751 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-18751?

CVE-2018-18751 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-18751?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-18751, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-18751

Published

Last Modified

References (16)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-18751?

Same vendor

Same CWE

CVE-2018-18751

📅 Published

🔄 Last Modified

🔗 References (16)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-18751?

🔗 Related CVEs(same vendor + same CWE)

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References (16)

Frequently asked(5)

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