PatchSiren

PatchSiren cyber security CVE debrief

CVE-2014-6271 GNU CVE debrief

CVE-2014-6271 is a GNU Bourne-Again Shell (Bash) arbitrary code execution vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog. For defenders, the key takeaway is not just that the issue exists, but that it is recognized as exploited in the wild and should be treated as a high-priority remediation item. CISA’s guidance in the supplied record is to apply updates per vendor instructions.

Vendor
GNU
Product
Bourne-Again Shell (Bash)
CVSS
CRITICAL 10
CISA KEV
Listed
Original CVE published
2022-01-28
Original CVE updated
2022-01-28
Advisory published
2022-01-28
Advisory updated
2022-01-28

Who should care

Administrators and security teams responsible for systems that use GNU Bourne-Again Shell (Bash), especially teams managing patching, asset inventory, and exposure to internet-facing or broadly deployed Linux/Unix environments.

Technical summary

The supplied sources identify CVE-2014-6271 as an arbitrary code execution issue in GNU Bourne-Again Shell (Bash). The CISA KEV entry marks the vulnerability as known exploited and directs organizations to apply vendor updates. No CVSS score was provided in the supplied corpus, so prioritization should rely on the KEV status and the role Bash plays in the affected environment.

Defensive priority

High. CISA inclusion in the Known Exploited Vulnerabilities catalog indicates active exploitation risk and makes remediation urgent, especially for systems where Bash is present in operationally important or externally reachable contexts.

Recommended defensive actions

  • Identify assets that include GNU Bourne-Again Shell (Bash) and verify whether vendor-provided fixes are installed.
  • Apply updates per vendor instructions, as directed in the CISA KEV record.
  • Use the CVE record and NVD entry to confirm the vulnerability identifier and track remediation status.
  • Prioritize affected systems that are externally reachable or critical to operations.
  • Document remediation completion and verify the vulnerable Bash package/version is no longer present.

Evidence notes

The supplied CISA KEV source explicitly lists CVE-2014-6271 as a known exploited vulnerability and states the required action: apply updates per vendor instructions. The official CVE record and NVD entry are provided as corroborating references for the vulnerability identifier and description. The corpus does not provide a CVSS score, so this debrief avoids assigning one.

Sources and references

Verified primary and authoritative sources

  • CVE-2014-6271 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2014-6271

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2014-6271 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2014-6271

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.