9.8

CVE-2018-6331: facebook buck Deserialization of Untrusted Data

CVSS: 9.8v3.1CriticalModified
Published 31-12-2018Last modified 06-05-2025
Open JSON

Vulnerability summary

CVE-2018-6331 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in facebook buck. EPSS estimates a 2.45% chance of exploitation in the next 30 days, higher than 84.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.45%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 31-12-2018
    PublishedVulnerability first disclosed.
  2. 06-05-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

2.45%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.45% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Facebook1 product
  • buckv2018.06.25.01 | ≥ unspecified, ≤ v2018.06.25.01 | < 2018.06.25.01

1 vendor · 1 product

References

1 links