CVE-2014-6278: in the CISA KEV catalogue
GNU Bash OS Command Injection Vulnerability. CISA added CVE-2014-6278 to the Known Exploited Vulnerabilities catalogue on 2025-10-02 with a default due date of 2025-10-23. Known ransomware campaign use: Unknown. Forensic triage flag: No.
GNU Bash contains an OS command injection vulnerability which allows remote attackers to execute arbitrary commands via a crafted environment. (CISA description)
- Vendor / product
- GNU GNU Bash
- CWE
- CWE-78
- 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.
- EPSS
- 100%, percentile 99 (scored 2026-11-03)
EPSS puts nearly every time in 100 odds (100%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
- http://ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-027
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/23467
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash
- https://www.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
- https://nvd.nist.gov/vuln/detail/CVE-2014-6278
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2014-6278 in the CISA KEV catalogue?
Yes. CISA added CVE-2014-6278 (GNU Bash OS Command Injection Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2025-10-02. CISA's default due date for it is 2025-10-23.
Is CVE-2014-6278 used in ransomware attacks?
CISA marks known ransomware campaign use as Unknown for CVE-2014-6278. That means CISA lacks confirmation, not that ransomware groups do not use it.
What should I do about CVE-2014-6278?
CISA's 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.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2014-6278