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Vulnerabilities

Vulnerability · CVE-2014-4657

The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrary code via crafted instructions.

Published Feb 20, 2020 · catalog updated Jun 17, 2026 · The safe_eval function in

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2014-4657. EPSS is 4.51%. Act only if a listed version of The safe_eval function in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The safe_eval function in).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.51%
Remediation
Version ranges on file
Affected products
cpe redhat/ansible

The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrary code via crafted instructions.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redhat/ansible< 1.5.4

How to fix CVE-2014-4657

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2014-4657. EPSS is 4.51%. Act only if a listed version of The safe_eval function in is installed.

Which versions are affected?

Compare what you have installed with < 1.5.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 4.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ansible security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 20, 2020 · Monitored products — high

    Detected

    The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrary code via crafted instructions.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrary code via crafted instructions.

Sources

  • CVE.orgVulnerability recordCVE-2014-4657

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2014-4657

    30-day exploitation probability 4.51%

    first.org
  • Monitored products — highVendor advisoryCVE-2014-4657

    The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrary code via crafted instructions.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgNov 4, 2026
  • Monitored products — highNov 2, 2026