What’s Vulnerable › Vulnerabilities

CVE-2018-6331

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-31 · updated 2026-06-17
• Weakness: CWE-502

Description

Buck parser-cache command loads/saves state using Java serialized object. If the state information is maliciously crafted, deserializing it could lead to code execution. This issue affects Buck versions prior to v2018.06.25.01.

Affected products

• Facebook Buck: before 2018.06.25.01 — fixed in 2018.06.25.01

How to fix

Upgrade to a fixed version: Facebook Buck 2018.06.25.01. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/buck/commit/8c5500981812564877bd122c0f8fab48d3528ddf
• https://github.com/facebook/buck/commit/8c5500981812564877bd122c0f8fab48d3528ddf

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