CVE-2018-3866

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 72.6% of scored records. A rank, not a probability.

NVD base score

9.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-08-23 22:00Z8 YR AGO

Last updated

2024-09-16 17:18Z1 YR AGO

Reserved

2018-01-02

Assigning CNA

talos

Record state

PUBLISHED

Severity

Critical (CVSS 9.9)

CNA CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

2bcac9a4783485ad79ab6c1e7a78fc415aaa5b80e8cc32aa01fda5bbd5f0bacc

• talosintelligence.comhttps://talosintelligence.com/vulnerability_reports/TALOS-2018-0548x_refsource_MISC