$ cve CVE-2014-6278 JSON

CVE-2014-6278 KEV EXPLOIT

8.8

HIGH · CVSS 3.1 · EPSS 99.6% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2025-10-23.

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.

Scoring

CVSS	8.8 (HIGH, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS	99.6% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-78
On CISA KEV	yes — remediate by 2025-10-23
Public exploit	yes
Published	2014-09-30
Last modified	2026-06-17

CISA KEV

Name	GNU Bash OS Command Injection Vulnerability
Added	2025-10-02
Due	2025-10-23
Vendor / product	GNU / GNU Bash
Ransomware use	none reported

Affected (1)

Vendor	Product
gnu	bash

Public exploits

Source	Title	Date
exploit-db	Sun Secure Global Desktop and Oracle Global Desktop 4.61.915 - Command Injection (Shellshock)	2016-06-06
exploit-db	Cisco UCS Manager 2.1(1b) - Remote Command Injection (Shellshock)	2016-03-16
exploit-db	Apache mod_cgi - 'Shellshock' Remote Command Injection	2014-10-06
exploit-db	GNU bash 4.3.11 - Environment Variable dhclient	2014-10-02
exploit-db	dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)	2014-09-29

References

→ the Explorer · watch your stack · NVD