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.
CVE-2014-7169
“—” beside the score: it is equal to NVD's CVSS score.
Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-01-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.
Also known asEUVD-2014-7046 (ENISA EUVD) · GHSA-f7j6-xrjp-vffg (GitHub Security Advisories)Source: ENISA EUVD
- Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low mission impact
A fix is available — apply it.
- CVSS v3
- 9.8
- EG Score
- 9.8CRITICALhigh confidence
- EG Risk
- 99EG Risk 99/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity98% × 45%Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation100% × 40%Fixed at 100% for a CISA KEV listing: EchelonGraph's rule.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Attend at low mission impact; Act at medium or high.Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high. - EPSS PROB
- 99.9%
- EPSS %ILE
- 99th
- KEV
- ⚠ Exploited
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 99.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- CISA KEV and EG-KEV Tier 1 (exploited in the wild)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Act at medium mission impactAttend at low mission impact; Act at medium or high.CISA BOD 26-04: 3 days & forensic triage if the affected system is publicly exposed; 3 days & forensic triage if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Attend at low mission impact; Act at medium or high.
A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)3 days & forensic triage if the affected system is publicly exposed; 3 days & forensic triage if it is not.
The score's inputs: In CISA KEV yes (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
CISA required action“Apply updates per vendor instructions.”
Quoted verbatim from CISA's Known Exploited Vulnerabilities catalog. CISA directs it at US federal civilian executive branch agencies under Binding Operational Directive (BOD) 26-04, which replaced BOD 22-01 on 10 June 2026; it is not EchelonGraph's advice. CISA's notes: https://nvd.nist.gov/vuln/detail/CVE-2014-7169
Published
September 25, 2014
Last Modified
April 22, 2026
Advisory Details (7)
Auto-updated Oct 29, 2026lcamtuf's old blog: Quick notes about the bash bug, its impact, and the fixes so far
http://lcamtuf.blogspot.com/2014/09/quick-notes-about-bash-bug-its-impact.htmlJVN#55667175: QNAP QTS vulnerable to OS command injection
http://jvn.jp/en/jp/JVN55667175/index.htmlMageia Advisory: MGASA-2014-0393 - Updated bash packages fix CVE-2014-7169
http://advisories.mageia.org/MGASA-2014-0393.htmlVendor Advisories for CVE-2014-7169(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(7)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | bash-static (4.3-7ubuntu1.2) @ trusty | 2026-11-01 | ubuntu |
| ubuntu | bash-static (4.3-7ubuntu1.3) @ trusty | 2026-11-01 | ubuntu |
| redhat | bash-0:3.2-32.el5_9.3.sjis.1 | 2014-11-17 | redhat |
| redhat | rhev-hypervisor6-0:6.5-20140930.1.el6ev | 2014-10-02 | redhat |
| redhat | bash-0:4.1.2-15.el6_5.1.sjis.2 | 2014-09-26 | redhat |
| redhat | bash-0:4.2.45-5.el7_0.4 | 2014-09-26 | redhat |
| redhat | bash-0:4.1.2-15.el6_4.2 | 2014-09-26 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(6 across 6 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | — |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | — |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | — |
| — |
Debian:6.0(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | 4.1-3 |
| — |
Debian:7(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| bash | 4.2+dfsg-0.1, 4.2+dfsg-0.1+deb7u1, 4.2+dfsg-0.1+deb7u2 |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(6)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
- Red HatRHSA-2014:1306IMPORTANT2014-09-24
RHSA-2014:1306 — Important
- Red HatRHSA-2014:1311IMPORTANT2014-09-24
RHSA-2014:1311 — Important
- Red HatRHSA-2014:1312IMPORTANT2014-09-24
RHSA-2014:1312 — Important
- Red HatRHSA-2014:1865IMPORTANT2014-09-24
RHSA-2014:1865 — Important
- UbuntuUSN-2363-1HIGH
Bash vulnerability
- UbuntuUSN-2363-2HIGH
Bash vulnerability
Data Freshness Timeline
(refreshed 22× in last 7d / 166× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 1,681 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 1,581 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 04:25 UTCOSV refresh
- 2026-11-01 23:21 UTCEG score recompute
- 2026-11-01 23:21 UTCVendor advisory
- 2026-11-01 23:20 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-31 23:47 UTCEG score recompute
- 2026-10-31 23:47 UTCVendor advisory
- 2026-10-31 23:47 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-31 00:14 UTCEG score recompute
- 2026-10-31 00:14 UTCVendor advisory
- 2026-10-31 00:14 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-30 00:41 UTCEG score recompute
- 2026-10-30 00:41 UTCVendor advisory
- 2026-10-30 00:41 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-29 01:08 UTCEG score recompute
- 2026-10-29 01:08 UTCVendor advisory
- 2026-10-29 01:08 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-28 01:34 UTCEG score recompute
- 2026-10-28 01:34 UTCVendor advisory
- 2026-10-28 01:34 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-27 02:01 UTCEG score recompute
- 2026-10-27 02:01 UTCVendor advisory
- 2026-10-27 02:01 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-26 02:26 UTCVendor advisory
- 2026-10-26 02:26 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-25 20:00 UTCEG score recompute
Show 75 moreShow fewer
- 2026-10-25 16:26 UTCEPSS rescoreEPSS 99.9% · 99th percentile
- 2026-10-25 02:54 UTCEG score recompute
- 2026-10-25 02:54 UTCVendor advisory
- 2026-10-25 02:53 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-24 03:19 UTCEG score recompute
- 2026-10-24 03:19 UTCVendor advisory
- 2026-10-24 03:19 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-23 03:46 UTCEG score recompute
- 2026-10-23 03:46 UTCVendor advisory
- 2026-10-23 03:46 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-22 04:11 UTCEG score recompute
- 2026-10-22 04:11 UTCVendor advisory
- 2026-10-22 04:10 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-21 04:33 UTCEG score recompute
- 2026-10-21 04:33 UTCVendor advisory
- 2026-10-21 04:33 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-20 05:00 UTCEG score recompute
- 2026-10-20 05:00 UTCVendor advisory
- 2026-10-20 04:59 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-19 05:26 UTCEG score recompute
- 2026-10-19 05:26 UTCVendor advisory
- 2026-10-19 05:26 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-18 05:52 UTCEG score recompute
- 2026-10-18 05:52 UTCVendor advisory
- 2026-10-18 05:51 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-17 06:17 UTCEG score recompute
- 2026-10-17 06:17 UTCVendor advisory
- 2026-10-17 06:17 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-16 06:43 UTCEG score recompute
- 2026-10-16 06:43 UTCVendor advisory
- 2026-10-16 06:43 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-15 16:26 UTCEPSS rescoreEPSS 99.9% · 99th percentile
- 2026-10-15 07:10 UTCEG score recompute
- 2026-10-15 07:10 UTCVendor advisory
- 2026-10-15 07:10 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-14 07:37 UTCEG score recompute
- 2026-10-14 07:37 UTCVendor advisory
- 2026-10-14 07:37 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-13 08:03 UTCVendor advisory
- 2026-10-13 08:03 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-12 21:14 UTCEG score recompute
- 2026-10-12 08:29 UTCVendor advisory
- 2026-10-12 08:28 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-12 04:12 UTCVendor advisory
- 2026-10-12 04:11 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 23:57 UTCVendor advisory
- 2026-10-11 23:56 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 19:39 UTCEG score recompute
- 2026-10-11 19:39 UTCVendor advisory
- 2026-10-11 19:39 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 15:26 UTCEG score recompute
- 2026-10-11 15:26 UTCVendor advisory
- 2026-10-11 15:26 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 11:12 UTCVendor advisory
- 2026-10-11 11:12 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 06:57 UTCVendor advisory
- 2026-10-11 06:57 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 02:43 UTCVendor advisory
- 2026-10-11 02:42 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 22:29 UTCVendor advisory
- 2026-10-10 22:28 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 18:13 UTCVendor advisory
- 2026-10-10 18:13 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 13:57 UTCVendor advisory
- 2026-10-10 13:57 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 09:43 UTCVendor advisory
- 2026-10-10 09:43 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 05:29 UTCVendor advisory
- 2026-10-10 05:29 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 01:14 UTCVendor advisory
- 2026-10-10 01:13 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-09 20:58 UTCVendor advisory
- 2026-10-09 20:58 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-09 16:44 UTCVendor advisory
- 2026-10-09 16:44 UTCGHSA enrichmentGHSA-f7j6-xrjp-vffg · GitHub severity HIGH · GitHub CVSS 9.8
Publicly available exploits
(16 references, 10 shown)Public exploit code is referenced for this CVE (15 Exploit-DB entries, 1 GitHub PoC). Defenders should treat patch urgency accordingly.
- Exploit-DBEDB-35115✓ verifiedPublished Oct 29, 2014
CUPS Filter - Bash Environment Variable Code Injection (Metasploit)
Open source ↗ - Exploit-DBEDB-34895✓ verifiedPublished Oct 6, 2014
Bash CGI - 'Shellshock' Remote Command Injection (Metasploit)
Open source ↗ - Exploit-DBEDB-34896✓ verifiedPublished Oct 6, 2014
Postfix SMTP 4.2.x < 4.2.48 - 'Shellshock' Remote Command Injection
Open source ↗ - Exploit-DBEDB-34862✓ verifiedPublished Oct 2, 2014
Pure-FTPd - External Authentication Bash Environment Variable Code Injection (Metasploit)
Open source ↗ - Exploit-DBEDB-34839✓ verifiedPublished Oct 1, 2014
IPFire - CGI Web Interface (Authenticated) Bash Environment Variable Code Injection
Open source ↗ - Exploit-DBEDB-36933✓ verifiedPublished Sep 29, 2014
dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)
Open source ↗ - Exploit-DBEDB-34765✓ verifiedPublished Sep 25, 2014
GNU Bash - 'Shellshock' Environment Variable Command Injection
Open source ↗ - Exploit-DBEDB-34766✓ verifiedPublished Sep 25, 2014
Bash - 'Shellshock' Environment Variables Command Injection
Open source ↗ - Exploit-DBEDB-34777✓ verifiedPublished Sep 25, 2014
GNU Bash - Environment Variable Command Injection (Metasploit)
Open source ↗ - Exploit-DBEDB-36609Published Apr 2, 2015
Kemp Load Master 7.1.16 - Multiple Vulnerabilities
Open source ↗
Past incidents using this CVE
(1)This CVE was central to one or more publicly-documented breaches. Each card links to authoritative reporting at the time of the incident.
- Shellshock (bash)Sep 2014
GNU bash environment-variable parsing flaw allowed remote command execution via CGI scripts, SSH, DHCP and Git. Affected millions of Unix systems.
Source: The Register
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:6.0:bash · Debian:7:bash · Debian:11:bash
- CVE-2014-7187EG 10.0EPSS p99HIGH
- CVE-2014-7186EG 10.0EPSS p99HIGH
- CVE-2014-6271EG 9.8 KEVEPSS p100CRITICAL
- CVE-2016-7543EG 8.4HIGH
- CVE-2014-6277EG 10.0EPSS p99HIGH
- CVE-2022-3715NVD 7.8EG 9.8CRITICAL
- CVE-2014-6278NVD 8.8EG 9.0 KEVEPSS p100CRITICAL
- CVE-2019-18276EG 7.8HIGH
- CVE-2012-6711NVD 7.0EG 7.8HIGH
- CVE-2019-9924EG 7.8HIGH
Same vendor
4 shownredhat:RHSA-2014:1306 · redhat:RHSA-2014:1354
Same CWE
10 shownCWE-78
Frequently asked(6)
What is CVE-2014-7169?
When was CVE-2014-7169 made public?
Is CVE-2014-7169 actively exploited?
What is the CVSS score of CVE-2014-7169?
Which products are affected by CVE-2014-7169?
How do I remediate CVE-2014-7169?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2014-7169
Is Your Infrastructure Affected by CVE-2014-7169?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.