CVE-2014-6278

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.996 · 100 %ileexploit · weaponizedEUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 8 exploits · weaponized

Likely / severe?

99.6% (100th) EPSS

CVSS 10 · high

Is it mine?

26 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

added 2025-10-02remediate by 2025-10-23

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 · scored 2026-10-23

GNU Bash OS Command Injection Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

exploits (8)

Public proof-of-concept and weaponised exploit code.

exploit/multi/http/apache_mod_cgi_bash_env_execApache mod_cgi Bash Environment Variable Code Injection (Shellshock)weaponized · metasploit
exploit/multi/http/cups_bash_env_execCUPS Filter Bash Environment Variable Code Injection (Shellshock)weaponized · metasploit
EDB-34900Apache mod_cgi - 'Shellshock' Remote Command Injectionfunctional · exploit_db
EDB-36933dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)functional · exploit_db
auxiliary/scanner/http/apache_mod_cgi_bash_envApache mod_cgi Bash Environment Variable Injection (Shellshock) Scannerfunctional · metasploit
EDB-34860GNU bash 4.3.11 - Environment Variable dhclientPoC · exploit_db

affected products (26)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
gnu bash= 1.14.0nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.1nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.2nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.3nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.4nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.5nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.6nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 1.14.7nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.0nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.01nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.01.1nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.02nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.02.1nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.03nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.04nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 2.05nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 3.0nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 3.0.16nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*
gnu bash= 3.1nvdUScpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:*

showing 20 of 26

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2014-09-30modified 2026-06-17

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references (332)

External citations — patches, advisories, analysis.

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