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CVE-2018-6331

CRITICAL
9.8
CVSS Score
Published: December 31, 2018 at 11:00 PM UTC
Updated: June 17, 2026 at 02:01 AM UTC
1 product affected across 1 vendorBuck

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Buck· Facebook
95%
v ≤ v2018.06.25.01v < 2018.06.25.012018.06.25.01
Affected range stops below 2018.06.25.01, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/facebook/buck/commit/8c5500981812564877bd122c0f8fab48d3528ddf

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-502

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