CVE-2014-6277

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

64.3% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2014-09-09 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2014-09-27 22:55 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 00:12 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 64.3% in the next 30 days (EPSS).
• Severity: 10.0 HIGH (CVSS).
• Fix: a patch or advisory is linked.
• It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published

2014-09-27 22:55 UTC

Last modified

2026-06-17 00:12 UTC

Exploit probability

64.3% · EPSS, next 30 days

Weakness

CWE-78 · OS command injection

Record status

Modified

Affected

• Gnu Bash 1.14.0
• Gnu Bash 1.14.1
• Gnu Bash 1.14.2
• Gnu Bash 1.14.3
• Gnu Bash 1.14.4
• Gnu Bash 1.14.5
• Gnu Bash 1.14.6
• Gnu Bash 1.14.7

Attack profile CVSS 2.0 · 10.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2014-6277.md and follow it. Check whether this project is affected by CVE-2014-6277. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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