CVE-2014-6278
GNU Bash OS Command Injection Vulnerability
- Published
- Sep 30, 2014
- Updated
- Dec 30, 2025
- Assigning CNA
- debian
- Evidence observed
- Sep 29, 2014
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 100.0%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
modules/auxiliary/scanner/http/apache_mod_cgi_bash_env.rb
Metasploit Framework modulesDeclared conditions
- verification: check_declared($.auxiliary_scanner/http/apache_mod_cgi_bash_env.check)
modules/exploits/multi/http/apache_mod_cgi_bash_env_exec.rb
Metasploit Framework modulesDeclared conditions
- platform: Linux($.exploit_multi/http/apache_mod_cgi_bash_env_exec.platform)
- verification: check_declared($.exploit_multi/http/apache_mod_cgi_bash_env_exec.check)
modules/exploits/multi/http/cups_bash_env_exec.rb
Metasploit Framework modulesDeclared conditions
- platform: Unix($.exploit_multi/http/cups_bash_env_exec.platform)
- verification: check_declared($.exploit_multi/http/cups_bash_env_exec.check)
Responsible use
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