CVE-2018-17160 — In FreeBSD before 11.2-STABLE(r341486) and 11.2-RELEASE-p6, insufficient bounds checking in one of the device models provided by bhyve can permit a guest operating system to overwrite memory in the bhyve host possibly permitting arbitrary code execution

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CRITICAL

In FreeBSD before 11.2-STABLE(r341486) and 11.2-RELEASE-p6, insufficient bounds checking in one of the device models provided by bhyve can permit a guest operating system to overwrite memory in the bhyve host possibly permitting arbitrary code execution

Published Dec 4, 2018

10.0

CRITICAL

CVSS 3.0

EPSS 3.35%

Description

In FreeBSD before 11.2-STABLE(r341486) and 11.2-RELEASE-p6, insufficient bounds checking in one of the device models provided by bhyve can permit a guest operating system to overwrite memory in the bhyve host possibly permitting arbitrary code execution. A guest OS using a firmware image can cause the bhyve process to crash, or possibly execute arbitrary code on the host as root.

Affected products

Vendor FreeBSD Product FreeBSD Default
n/a
- Version
  FreeBSD 11.2 before 11.2-RELEASE-p6
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

FreeBSD

n/a

Version	Status	Constraints
FreeBSD 11.2 before 11.2-RELEASE-p6	affected	-

Remediation

No remediation recorded yet.

Metrics

3.35% 0.03348

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.03348

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (14 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	3.35% (0.03348)	88.30th	v5 (v2026.06.15)
Jun 15, 2026	3.35% (0.03348)	87.07th	v5 (v2026.06.15)
Jul 20, 2024	0.43% (0.00427)	74.61th	v3 (v2023.03.01)
Apr 26, 2024	0.43% (0.00427)	74.10th	v3 (v2023.03.01)
Feb 8, 2024	0.45% (0.00447)	74.25th	v3 (v2023.03.01)
Mar 7, 2023	0.45% (0.00447)	71.02th	v3 (v2023.03.01)
Mar 6, 2023	1.44% (0.01440)	73.47th	v2 (v2022.01.01)
Feb 28, 2023	1.44% (0.01440)	73.45th	v2 (v2022.01.01)
Apr 1, 2022	1.44% (0.01440)	71.44th	v2 (v2022.01.01)
Feb 4, 2022	1.44% (0.01440)	50.53th	v2 (v2022.01.01)
Feb 3, 2022	1.09% (0.01095)	29.04th	v1
Jan 6, 2022	1.09% (0.01095)	28.40th	v1
Sep 1, 2021	1.09% (0.01095)	65.96th	v1
Apr 14, 2021	1.09% (0.01095)	0.00th	v1

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (2)

http://www.securityfocus.com/bid/106210
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.asc
vendor-advisoryx_refsource_FREEBSDMitigationPatchVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/106210		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.asc		vendor-advisoryx_refsource_FREEBSDMitigationPatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner freebsd

Published Dec 4, 2018

Updated Aug 5, 2024

Reserved Sep 18, 2018

Link CVE-2018-17160

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-17160

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-17160