Is CVE-2018-1000156 in the CISA KEV catalog?

No. CVE-2018-1000156 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-1000156?

CVE-2018-1000156 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2018-1000156?

CVE-2018-1000156 has an EPSS score of 5.56% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000156?

Upgrade patch on debian 11 to 2.7.6-2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-1000156

HIGHEPSS 92th pctl

7.8

CVSS v3

NVD

Description

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.

CWE-20Improper Input Validation

How to fix

Remediation Available

patchDebian

Fixed in:2.7.6-2CVE-2018-1000156

patchUbuntu

Fixed in:2.7.1-4ubuntu2.4USN-3624-1

Fixed in:2.7.5-1ubuntu0.16.04.1USN-3624-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

5.56%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-14.