CVE-2018-6856

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

0.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/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

2018-07-09 18:00Z8 YR AGO

Last updated

2024-08-05 06:17Z2 YR AGO

Reserved

2018-02-08

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

abc9ae67bca733e28dacd13d215ac7eb362e84fbad4e95814910772cfea7e4ad

• community.sophos.comhttps://community.sophos.com/kb/en-us/131934x_refsource_CONFIRM
• seclists.org20180706 Sophos Safeguard Products - Multiple Privilege Escalation Vulnerabilities.http://seclists.org/fulldisclosure/2018/Jul/20mailing-listx_refsource_FULLDISC
• labs.nettitude.comhttps://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities/x_refsource_MISC