CVE-2020-14343 Official NVD Security Advisory (CVSS 9.8)
Executive & SecOps Summary
SECOPS ASSESSMENTImpacted configurations listed under CVE-2020-14343
A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it pro...
Review official patches and verify network isolation controls.
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUNDApply the latest security updates provided by the official software maintainers.
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Technical Root Cause & Exploitation Mechanics
Official NVD Technical Description
A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.
- CVSS Score: 9.8 (CRITICAL)
- CWE IDs: CWE-20, CWE-20
Official Vendor Advisories & References
A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.
Frequently Asked SecOps Questions (CVE-2020-14343)
FAQQ1. How critical is CVE-2020-14343 and is it actively exploited in the wild?
CVE-2020-14343 is rated CVSS 9.8 (CRITICAL) with a 30-day EPSS exploitation probability of 6.2%. Organizations running affected versions should prioritize patching based on network exposure.
Q2. Which vendors and products are affected by CVE-2020-14343?
Primary impacted vendors include security-advisory across software. Scope summary: Refer to official NVD CPE configuration entries
Q3. What temporary mitigations or workarounds exist for CVE-2020-14343 before patching?
[Mitigation] Review official patches and verify network isolation controls. Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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