How severe is CVE-2014-4657?

CVE-2014-4657 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2014-4657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-4657?

CVE-2014-4657 affects Redhat Ansible. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-4657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2014-4657 published?

CVE-2014-4657 was published on 2020-02-20 and last updated on 2026-06-17.

CVE-2014-4657

CVE-2014-4657 is a critical-severity vulnerability in Redhat Ansible with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Redhat Ansible
Published: 2020-02-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2014-4657?: CVE-2014-4657 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2014-4657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4657?: CVE-2014-4657 affects Redhat Ansible. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-4657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2014-4657 published?: CVE-2014-4657 was published on 2020-02-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*

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