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CVE-2014-6277

HIGH · CVSS 10.0EPSS 64.3%EU EUVD

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.

Key facts

CVSS score
10.0 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE)
CWE-78
EPSS score
64.3% (99th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2014-6162)
Published
September 27, 2014
NVD last modified
June 17, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-6162 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash
  • gnu / bash

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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