Threats / GNU / CVE-2014-6278
CVE-2014-6278
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
GNU Bash vulnerability
GNU Bash contains an OS command injection vulnerability allowing remote attackers to execute arbitrary commands through crafted environment variables.
Verdict
Today item — known-exploited.
This vulnerability enables unauthenticated remote code execution on systems running vulnerable Bash versions. The high EPSS score and active exploitation in the wild indicate immediate risk to exposed systems, particularly web servers and network services that process untrusted input.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-02).
Probability (EPSS)
EPSS 0.99621 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: GNU, GNU Bash. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-78 OS Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious environment variable containing shell metacharacters and command injection payloads.
Business
Attackers gain arbitrary code execution with the privileges of the vulnerable process, potentially compromising the entire system.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I send the crafted environment through network services, CGI scripts, or SSH connections that invoke Bash.
Business
Lateral movement and privilege escalation become possible as attackers establish persistent access across infrastructure.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute system commands to exfiltrate data, install backdoors, or pivot to internal networks.
Business
Confidentiality, integrity, and availability of critical systems are compromised, resulting in data breach and operational disruption.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05