CVE-2014-6277

highpriority · attend · 73EPSS 0.643 · 99 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · functional

Likely / severe?

64.3% (99th) EPSS

CVSS 10 · high

Is it mine?

27 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-23

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 code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) 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 and CVE-2014-7169.

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⚠ sources disagree · high–critical · 10–10

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

v2.010criticalAV:N/AC:L/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-78US

exploits (3)

Public proof-of-concept and weaponised exploit code.

EDB-35081Binary File Descriptor Library (libbfd) - Out-of-Bounds Crashfunctional · exploit_db
EDB-36933dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)functional · exploit_db
EDB-34860GNU bash 4.3.11 - Environment Variable dhclientPoC · exploit_db

affected products (27)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Gentoo Foundation Inc. Gentoo Linux≤ 20140826fstec_bduRU
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:*:*:*:*:*:*:*:*

showing 20 of 27

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2014-09-27modified 2026-06-17

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references (220)

External citations — patches, advisories, analysis.

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