5.5

CVE-2018-6921: freebsd

CVSS: 5.5v3.0MediumModified
Published 08-05-2018Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2018-6921 is a medium (CVSS 5.5) vulnerability in freebsd. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.31%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-05-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

-0.01 pp

From 0.31% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.31%

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

Freebsd1 product
  • freebsdFreeBSD 11.x prior to 11.1-RELEASE-p10. | ≥ 11.0, < 11.1

1 vendor · 1 product

References

2 links