CASCACascade Atlas

Evidence dossier

CVE-2014-6278

CVE-2014-6278

82.0–100.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Sep 30, 2014
Updated
Dec 30, 2025
Evidence coverage
72%
CISA KEVCatalog member

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

FIRST EPSS99.62%

2026-07-18 · v2026.06.15 · percentile 99.9%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

debianoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

GNU Bash OS Command Injection Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.996210000000; percentile 0.999460000000

Applicability

Cited product scope

Trace impact →
n/an/a
[{"status": "affected", "version": "n/a"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.2:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.3:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.4:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.5:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.6:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:1.14.7:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.01:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.01.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.02:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.02.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.03:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.04:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.05:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.05:a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:2.05:b:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:3.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:3.0.16:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:3.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:3.2:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:3.2.48:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:4.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:4.0:rc1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:4.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:4.2:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:gnu:bash:4.3:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

10.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:C/I:C/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.