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TI-2020-18990 Aliases CVE-2020-36855GHSA-7w2m-w84v-g952

DCMTK dcmqrscp parseQuota stack-based overflow

Priority MEDIUM 55CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A security vulnerability has been detected in DCMTK up to 3.6.5. The affected element is the function parseQuota of the component dcmqrscp. The manipulation of the argument StorageQuota leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. Upgrading to version 3.6.6 is sufficient to fix this issue. The identifier of the patch is 0fef9f02e. It is recommended to upgrade the affected component.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00247 16th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed DCMTK: 3.6.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—DCMTK3.6.0; 3.6.1; 3.6.2; 3.6.3; 3.6.4; 3.6.53.6.6Patch availableCNA
  • DCMTK Vendor— Affected 3.6.0; 3.6.1; 3.6.2; 3.6.3; 3.6.4; 3.6.5 Fixed in 3.6.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:offis:dcmtk:*:*:*:*:*:*:*:*before 3.6.6VulnerableOFFIS
  • cpe:2.3:a:offis:dcmtk:*:*:*:*:*:*:*:* Versions before 3.6.6 Vulnerable ·OFFIS

Remediation

  • Fix · CNA DCMTK Fixed in 3.6.6

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36855
  2. 2026-10-03 Alias added: GHSA-7w2m-w84v-g952

References

Exploit 2

  • TI-2025-08922 DCMTK dcm2img diybrpxt.h memory corruption CVSS 4.0MEDIUM 4.8
  • TI-2022-04568 DCMTK dcmqrscp dcmqrcnf.cc readPeerList null pointer dereference CVSS 4.0MEDIUM 4.8
  • TI-2024-22823 dcmnet in DCMTK before 3.6.9 has a segmentation fault via an invalid DIMSE message. CVSS 3.1MEDIUM 4.3
  • TI-2019-16028 Out-of-bounds write in OFFIS.de DCMTK CVSS 3.1CRITICAL 9.8
  • TI-2022-01961 OFFIS DCMTK Path Traversal CVSS 3.1CRITICAL 9.8
  • TI-2022-01960 OFFIS DCMTK Path Traversal CVSS 3.1CRITICAL 9.8
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences