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.
Conclusion & alert: CVE-2014-6277 is rated High Exploit Risk (88.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 86.75%, 99th percentile). Core evidence: 4 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 35081 | exploit_db | edb | 2014-10-27 | Exploit-DB ↗ |
| 34860 | exploit_db | edb | 2014-10-02 | Exploit-DB ↗ |
| 36933 | exploit_db | edb | 2014-09-29 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-03 | 87.95% | 86.75% | -1.20% |
| 2 | 2026-05-22 | 86.75% | 87.95% | +1.20% |
| 3 | 2026-04-15 | — | 86.75% | — |
Full EPSS history (42 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-6277 not yet assigned priority: Debian including 1 source packages (bash), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2014-6277 |
gentoo
|
high | CVE-2014-6277: 1 GLSA(s) (201410-01), 1 atom(s) (app-shells/bash); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-6277 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2014-6277 |
suse
|
high | CVE-2014-6277 severity important: SUSE including 109 source package names (Containment-Studio-SLE11_SP1-4.85.108-20141006120850, Containment-Studio-SLE11_SP3-5.04.108-20141006122525, …), 223 product×package rows across 50 product lines (HPE Helion OpenStack 8, SUSE Linux Enterprise Desktop 12 SP1, … (50 product lines)): Fixed 147, Known Not Affected 76. | https://www.suse.com/security/cve/CVE-2014-6277/ |
ubuntu
|
medium | CVE-2014-6277 medium priority: Ubuntu including 1 source packages (bash), 4 status rows across 4 suites (lucid, precise, trusty, upstream): released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2014-6277 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gnu | bash | 1.14.0 | cpe:2.3:a:gnu:bash:1.14.0:*:*:*:*:*:*:* |
| gnu | bash | 1.14.1 | cpe:2.3:a:gnu:bash:1.14.1:*:*:*:*:*:*:* |
| gnu | bash | 1.14.2 | cpe:2.3:a:gnu:bash:1.14.2:*:*:*:*:*:*:* |
| gnu | bash | 1.14.3 | cpe:2.3:a:gnu:bash:1.14.3:*:*:*:*:*:*:* |
| gnu | bash | 1.14.4 | cpe:2.3:a:gnu:bash:1.14.4:*:*:*:*:*:*:* |
| gnu | bash | 1.14.5 | cpe:2.3:a:gnu:bash:1.14.5:*:*:*:*:*:*:* |
| gnu | bash | 1.14.6 | cpe:2.3:a:gnu:bash:1.14.6:*:*:*:*:*:*:* |
| gnu | bash | 1.14.7 | cpe:2.3:a:gnu:bash:1.14.7:*:*:*:*:*:*:* |
| gnu | bash | 2.0 | cpe:2.3:a:gnu:bash:2.0:*:*:*:*:*:*:* |
| gnu | bash | 2.01 | cpe:2.3:a:gnu:bash:2.01:*:*:*:*:*:*:* |
| gnu | bash | 2.01.1 | cpe:2.3:a:gnu:bash:2.01.1:*:*:*:*:*:*:* |
| gnu | bash | 2.02 | cpe:2.3:a:gnu:bash:2.02:*:*:*:*:*:*:* |
| gnu | bash | 2.02.1 | cpe:2.3:a:gnu:bash:2.02.1:*:*:*:*:*:*:* |
| gnu | bash | 2.03 | cpe:2.3:a:gnu:bash:2.03:*:*:*:*:*:*:* |
| gnu | bash | 2.04 | cpe:2.3:a:gnu:bash:2.04:*:*:*:*:*:*:* |
| gnu | bash | 2.05 | cpe:2.3:a:gnu:bash:2.05:*:*:*:*:*:*:* |
| gnu | bash | 2.05 | cpe:2.3:a:gnu:bash:2.05:a:*:*:*:*:*:* |
| gnu | bash | 2.05 | cpe:2.3:a:gnu:bash:2.05:b:*:*:*:*:*:* |
| gnu | bash | 3.0 | cpe:2.3:a:gnu:bash:3.0:*:*:*:*:*:*:* |
| gnu | bash | 3.0.16 | cpe:2.3:a:gnu:bash:3.0.16:*:*:*:*:*:*:* |
| gnu | bash | 3.1 | cpe:2.3:a:gnu:bash:3.1:*:*:*:*:*:*:* |
| gnu | bash | 3.2 | cpe:2.3:a:gnu:bash:3.2:*:*:*:*:*:*:* |
| gnu | bash | 3.2.48 | cpe:2.3:a:gnu:bash:3.2.48:*:*:*:*:*:*:* |
| gnu | bash | 4.0 | cpe:2.3:a:gnu:bash:4.0:*:*:*:*:*:*:* |
| gnu | bash | 4.0 | cpe:2.3:a:gnu:bash:4.0:rc1:*:*:*:*:*:* |
| gnu | bash | 4.1 | cpe:2.3:a:gnu:bash:4.1:*:*:*:*:*:*:* |
| gnu | bash | 4.2 | cpe:2.3:a:gnu:bash:4.2:*:*:*:*:*:*:* |
| gnu | bash | 4.3 | cpe:2.3:a:gnu:bash:4.3:*:*:*:*:*:*:* |