CVE-2024-24474Public exploitNetwork attack vector

Code execution via SCSI transfer-length underflow

Published Feb 20, 2024 · Updated Aug 15, 2024

Buffer overflow in QEMU before 8.2.0 allows remote authenticated users to execute arbitrary code via a crafted SCSI TI command. The esp_do_nodma function copies available FIFO data into the SCSI buffer without first bounding the copy by async_len, so subtracting a larger length wraps the unsigned counter and advances writes beyond the allocated buffer. The attack requires low-privileged access to an emulated ESP-compatible SCSI device and can crash QEMU or execute code in its host process.

CVSS severity8.8
High
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in QEMU before 8.2.0 allows remote authenticated users to execute arbitrary code via a crafted SCSI TI command. The esp_do_nodma function copies available FIFO data into the SCSI buffer without first bounding the copy by async_len, so subtracting a larger length wraps the unsigned counter and advances writes beyond the allocated buffer. The attack requires low-privileged access to an emulated ESP-compatible SCSI device and can crash QEMU or execute code in its host process.

The record

CVE
CVE-2024-24474
Published
Feb 20, 2024
Updated
Aug 15, 2024
Vendor
QEMU Project
Product
QEMU
Classifications
CWE-120, CWE-191, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=0 <8.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

QEMU Project · QEMUversion=0 <8.2.0

Published CVSS scores

8.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-191Integer Underflow (Wrap or Wraparound)
T1068Exploitation for Privilege Escalation

Public exploit references

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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