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CVEs / CVE-2014-6278

CVE-2014-6278: GNU Bash OS Command Injection Vulnerability

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Summary

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

CISA, Known Exploited Vulnerabilities catalog

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.

The CVE record, via NVD · published 30 Sep 2014 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
ProductAffectedFixed in
n/a n/an/a—

Exploitation

In CISA KEV since2 Oct 2025
Due date for US federal agencies23 Oct 2025
Used in ransomware campaignsUnknown
Required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity

CVSS 2.010 high
AV:N/AC:L/Au:N/C:C/I:C/A:C
Scored by NVD
WeaknessCWE-78

References

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.