CVE-2023-32653Network attack vector

Code execution via underflowed DICOM array index

Published Sep 25, 2023 · Updated Nov 4, 2025

Out-of-bounds write in Accusoft ImageGear 20.1 allows context-dependent attackers to execute code through a malformed DICOM file. In dcm_pixel_data_decode, a file-controlled value is subtracted from 15 without a bounds check, underflowing an array index and directing a heap pointer write outside the stack array. The embedding application must open the file; successful control of the write executes code in that application's security context.

CVSS severity9.8
Critical
EPSS probability1.03%
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 Accusoft ImageGear 20.1 allows context-dependent attackers to execute code through a malformed DICOM file. In dcm_pixel_data_decode, a file-controlled value is subtracted from 15 without a bounds check, underflowing an array index and directing a heap pointer write outside the stack array. The embedding application must open the file; successful control of the write executes code in that application's security context.

The record

CVE
CVE-2023-32653
Published
Sep 25, 2023
Updated
Nov 4, 2025
Vendor
Accusoft
Product
ImageGear
Classifications
CWE-191, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2023CVE 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=20.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Accusoft · ImageGearversion=20.1

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.8Cisco TalosCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File

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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