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  4. CVE 2026 87020 orthanc dicom server integer overflow or
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Back to active CVEs
High · CVSS 7.2CVE-2026-87020

Orthanc DICOM Server Integer Overflow or WraparoundCVE-2026-87020

Answer in brief

CVE-2026-87020 records a High severity (CVSS 7.2) vulnerability in Orthanc DICOM Server Integer Overflow or Wraparound. The current sources do not mark it as known exploited. The current feed maps Orthanc/DICOM Server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 18, 2026Source checked Oct 26, 2026First seen by HOL Sep 11, 2026Material review Sep 18, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.2
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Orthanc/DICOM Server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Orthanc/DICOM Servergeneric>=0 <1.13.01.13.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Orthanc/DICOM Server.
  2. 2Review the reported fix. Source-reported solution: Orthanc recommends users update to v1.13.0.  https://orthanc.uclouvain.be/downloads/index.html

Evidence timeline and material changes

  1. Published upstream

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 11, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referenceorthanc.uclouvain.be
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
Upstream source description

An integer overflow in a specified pitch and buffer-size computation leads to a heap out-of-bounds write when Orthanc DICOM Server decodes an attacker-supplied PNG.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-190
Source
CVE List V5
Source checked
Oct 26, 2026
References
3 linked sources
Open source record