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Servers and applications

CVE-2014-7169

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact 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,…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 28 Jan 2022.

Severity
Critical 9.8
Published
25 Sept 2014
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
100% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
OS command injection (CWE-78)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Description

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact 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.

From NVD.

Affected software

SoftwareAffected versions
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_access_policy_manager
  • From 10.1.0 up to 10.2.4
  • From 11.0.0 up to 11.5.1
  • Version 11.6.0
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • From 10.0.0 up to 10.2.4
  • From 11.0.0 up to 11.5.1
  • Version 11.6.0

Known exploited

CISA name
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
28 Jul 2022
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2014-7169
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2014-7169