TI-2018-04656 Aliases CVE-2018-6331 GHSA-gwvw-v6hg-775r

Deserialization of untrusted data in Meta Buck

MEDIUM 54CWE-502Published 2018-12-31 · Updated 2025-05-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.02452 84th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Meta	Buck	v2018.06.25.01; up to v2018.06.25.01	—	No fix listed	CNA

Buck VendorMeta Affected v2018.06.25.01; up to v2018.06.25.01 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:facebook:buck::::::::	before 2018.06.25.01	Vulnerable	Meta

cpe:2.3:a:facebook:buck:*:*:*:*:*:*:*:* Versions before 2018.06.25.01 Vulnerable ·Meta

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-6331
2026-10-03 Alias added: GHSA-gwvw-v6hg-775r

References

Patch 1

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

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences