CVE-2024-47796

Memory corruption via unchecked pixel LUT index

Published Jan 13, 2025 · Updated Nov 3, 2025

Out-of-bounds write in DCMTK 3.6.8 nowindow rendering allows attackers to corrupt memory via a crafted DICOM file. DiMonoOutputPixelTemplate::nowindow sizes its output from the DICOM Rows and Columns fields but uses attacker-controlled pixel values as lookup-table indexes without validating their range. Reachability requires a DCMTK application to process the file; successful triggering corrupts heap memory and terminates the process.

CVSS severity8.4
High
EPSS probability0.62%
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 write in DCMTK 3.6.8 nowindow rendering allows attackers to corrupt memory via a crafted DICOM file. DiMonoOutputPixelTemplate::nowindow sizes its output from the DICOM Rows and Columns fields but uses attacker-controlled pixel values as lookup-table indexes without validating their range. Reachability requires a DCMTK application to process the file; successful triggering corrupts heap memory and terminates the process.

The record

CVE
CVE-2024-47796
Published
Jan 13, 2025
Updated
Nov 3, 2025
Vendor
OFFIS e.V.
Product
DCMTK
Classifications
CWE-119, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=3.6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OFFIS e.V. · DCMTKversion=3.6.8

Published CVSS scores

8.4Cisco TalosCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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