Is CVE-2014-6278 in the CISA KEV catalog?

Yes. CVE-2014-6278 is on the CISA Known Exploited Vulnerabilities list, added 2025-10-02.

What is the CVSS severity of CVE-2014-6278?

CVE-2014-6278 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2014-6278?

CVE-2014-6278 has an EPSS score of 99.62% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-6278?

Upgrade bash on debian 11 to 4.3-9.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2014-6278

HIGHCISA KEVEPSS 100th pctl

8.8

CVSS v3

NVD

Description

GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary commands via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271, CVE-2014-7169, and CVE-2014-6277.

CWE-78OS Command Injection

How to fix

Remediation Available

bashDebian

Fixed in:4.3-9.2CVE-2014-6278

bashUbuntu

Fixed in:4.3-7ubuntu1.5USN-2380-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

99.62%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

GNU Bash OS Command Injection Vulnerability

GNU Bash contains an OS command injection vulnerability which allows remote attackers to execute arbitrary commands via a crafted environment.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Remediation due: 2025-10-23

References

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	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 2026-04-22.