CVE-2020-36855

Name: CVE-2020-36855
Creator: NVD / NIST
Published: 2025-10-21T15:15:36.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2020-36855 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. A security vulnerability has been detected in DCMTK up to 3.6.5. The affected element is the function parseQuota of the component dcmqrscp. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

1.9/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.22%

12.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Offis	Dcmtk	< 3.6.6

References

https://shimo.im/docs/rp3OMVMDPKtjn0km/Exploit, Third Party Advisory
https://vuldb.com/?ctiid.329028Permissions Required, VDB Entry
https://vuldb.com/?id.329028Third Party Advisory, VDB Entry
https://vuldb.com/?submit.673137Third Party Advisory, VDB Entry
https://shimo.im/docs/rp3OMVMDPKtjn0km/readExploit, Third Party Advisory

Timeline

Published: Oct 21, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-36855?

How severe is CVE-2020-36855?

CVE-2020-36855 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36855?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36855?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST