CVE-2019-15876

Unauthorized firmware commands via unchecked oce ioctls

Published Apr 28, 2020 · Updated Aug 5, 2024

Missing authorization in the oce(4) driver in FreeBSD 11.3 and 12.1 allows local users to submit device-firmware commands. The driver-specific ioctl handlers forward firmware passthrough requests without checking the caller's kernel privilege. Exploitation requires local code execution and a system containing a network adapter driven by oce(4); the documented consequence is unauthorized firmware command submission, not kernel code execution.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in the oce(4) driver in FreeBSD 11.3 and 12.1 allows local users to submit device-firmware commands. The driver-specific ioctl handlers forward firmware passthrough requests without checking the caller's kernel privilege. Exploitation requires local code execution and a system containing a network adapter driven by oce(4); the documented consequence is unauthorized firmware command submission, not kernel code execution.

The record

CVE
CVE-2019-15876
Published
Apr 28, 2020
Updated
Aug 5, 2024
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-862, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.1-STABLE before r356089, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r356090, 11.3-RELEASE before 11.3-RELEASE-p7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=12.1-STABLE before r356089, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r356090, 11.3-RELEASE before 11.3-RELEASE-p7

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:N/I:P/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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