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CVE-2014-6271GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability

GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code 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, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.

9.8 CRITICALEPSS 99.99%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Overview

Severity

ScoreSeverityVersionVector String
9.8CRITICAL3.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0HIGH2.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

CISA required action

⚡ Known exploited · remediation due Jul 28, 2022

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Details

CVE ID
CVE-2014-6271
Status
Analyzed
Assigner (CNA)
debian
Published
Sep 24, 2014
Last modified
2026-06-17 00:12 UTC
Weaknesses

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 11:39 UTC.