CVE-2024-43110

Kernel-heap disclosure via oversized REQUEST SENSE length

Published Sep 5, 2024 · Updated Nov 4, 2025

Out-of-bounds read in FreeBSD 13.3, 14.0, and 14.1 allows attackers to read up to three kernel-heap bytes through ctl. ctl_request_sense accepts a REQUEST SENSE length of 255 for a buffer three bytes shorter, then copies the oversized result to a ctl consumer. Reachability requires a bhyve guest with virtio_scsi or an iSCSI initiator accepted by ctld; disclosure is limited to three bytes per request.

CVSS severity8.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in FreeBSD 13.3, 14.0, and 14.1 allows attackers to read up to three kernel-heap bytes through ctl. ctl_request_sense accepts a REQUEST SENSE length of 255 for a buffer three bytes shorter, then copies the oversized result to a ctl consumer. Reachability requires a bhyve guest with virtio_scsi or an iSCSI initiator accepted by ctld; disclosure is limited to three bytes per request.

The record

CVE
CVE-2024-43110
Published
Sep 5, 2024
Updated
Nov 4, 2025
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-125, T1190, T1611
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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=13.3 <13.3_p6
  2. Affected versionversion=13.3-RELEASE <p6
  3. Affected versionversion=14.0 <14.0_p10
  4. Affected versionversion=14.0-RELEASE <p10
  5. Affected versionversion=14.1 <14.1_p4
  6. Affected versionversion=14.1-RELEASE <p4

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The FreeBSD Project · FreeBSDversion=13.3 <13.3_p6; version=13.3-RELEASE <p6; version=14.0 <14.0_p10; version=14.0-RELEASE <p10; version=14.1 <14.1_p4; version=14.1-RELEASE <p4

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1190Exploit Public-Facing Application
T1611Escape to Host

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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