CVE-2018-20969

HIGHNVD 7.87.8—

7.8

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 58.7%
KEV: Not listed

Published

August 16, 2019

Last Modified

November 21, 2024

References (18)

cve@mitrehttp://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2798
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:2964
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:3757
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:3758
cve@mitrehttps://access.redhat.com/errata/RHSA-2019:4061
cve@mitrehttps://git.savannah.gnu.org/cgit/patch.git/commit/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0
cve@mitrehttps://github.com/irsl/gnu-patch-vulnerabilities
cve@mitrehttps://seclists.org/bugtraq/2019/Aug/29
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2798
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:2964
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3757
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3758
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:4061

Patch Availability(5)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	patch-0:2.7.1-11.el7_4	2019-12-03	redhat
redhat	patch-0:2.7.1-11.el7_5	2019-11-06	redhat
redhat	patch-0:2.7.1-11.el7_6	2019-11-06	redhat
redhat	patch-0:2.7.1-12.el7_7	2019-10-03	redhat
redhat	patch-0:2.7.6-9.el8_0	2019-09-19	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-78OS Command Injection

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 10× in last 7d / 19× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
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
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
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
2026-05-23 03:09 UTCEG score recompute
2026-05-23 03:09 UTCVendor advisory
2026-05-23 03:09 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2018-20969?

CVE-2018-20969 is a high vulnerability published on August 16, 2019. doedscript in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.

When was CVE-2018-20969 disclosed?

CVE-2018-20969 was first published in the National Vulnerability Database on August 16, 2019, 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-2018-20969 actively exploited?

CVE-2018-20969 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20969?

CVE-2018-20969 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2018-20969?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20969, 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.

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CVE-2018-20969

Published

Last Modified

References (18)

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20969?

Same vendor

Same CWE

CVE-2018-20969

📅 Published

🔄 Last Modified

🔗 References (18)

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20969?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

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Published

Last Modified

References (18)

Frequently asked(5)

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