CVE-2014-6278VulnerabilityPublished 10/02/2025Updated 10/24/2026
CVE-2014-6278: GNU Bash OS Command Injection Vulnerability
Affects GNU GNU BashSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 10/02/2025
- KEV deadline
- 10/23/2025
- EPSS
- 99.6% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-027 (opens in a new tab)
- support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/23467 (opens in a new tab)
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash (opens in a new tab)
- ibm.com/support/pages/security-bulletin-update-vulnerabilities-bash-affect-aix-toolbox-linux-applications-cve-2014-6271-cve-2014-6277-cve-2014-6278-cve-2014-7169-cve-2014-7186-and-cve-2014-7187 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2014-6278 (opens in a new tab)
Description
GNU Bash contains an OS command injection vulnerability which allows remote attackers to execute arbitrary commands via a crafted environment.
Weaknesses
References
- ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-027 (opens in a new tab)
- support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/23467 (opens in a new tab)
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash (opens in a new tab)
- ibm.com/support/pages/security-bulletin-update-vulnerabilities-bash-affect-aix-toolbox-linux-applications-cve-2014-6271-cve-2014-6277-cve-2014-6278-cve-2014-7169-cve-2014-7186-and-cve-2014-7187 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2014-6278 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?search=CVE-2014-6278 (opens in a new tab)