CVE-2014-6278

high · 8.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Added 2025-10-02Remediation due 2025-10-23

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.

8.8

CVSS

99.5%

EPSS (exploit prob.)

100th

EPSS percentile

2014-09-30

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

CWE-78

Affected products

Vendor	Product	Affected versions
gnu	bash	1.14.0
gnu	bash	1.14.1
gnu	bash	1.14.2
gnu	bash	1.14.3
gnu	bash	1.14.4
gnu	bash	1.14.5
gnu	bash	1.14.6
gnu	bash	1.14.7
gnu	bash	2.0
gnu	bash	2.01
gnu	bash	2.01.1
gnu	bash	2.02
gnu	bash	2.02.1
gnu	bash	2.03
gnu	bash	2.04
gnu	bash	2.05
gnu	bash	2.05
gnu	bash	2.05
gnu	bash	3.0
gnu	bash	3.0.16
gnu	bash	3.1
gnu	bash	3.2
gnu	bash	3.2.48
gnu	bash	4.0
gnu	bash	4.0
gnu	bash	4.1
gnu	bash	4.2
gnu	bash	4.3

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2014-6278