CVE-2025-25475Network attack vector

Application crash via invalid RLE stripe size

Published Feb 18, 2025 · Updated Nov 3, 2025

Null pointer dereference in DCMTK 3.6.9 allows attackers to crash DICOM-processing applications via a crafted DICOM file. DcmRLECodecDecoder::decode trusts an RLE header stripe size and passes an overlong input length to decompress instead of limiting it to the remaining fragment. An application must decode the invalid image; the documented consequence is a service interrupt, with no reported confidentiality or integrity impact.

CVSS severity7.5
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in DCMTK 3.6.9 allows attackers to crash DICOM-processing applications via a crafted DICOM file. DcmRLECodecDecoder::decode trusts an RLE header stripe size and passes an overlong input length to decompress instead of limiting it to the remaining fragment. An application must decode the invalid image; the documented consequence is a service interrupt, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2025-25475
Published
Feb 18, 2025
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA: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.

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No observations available

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

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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