CVE-2026-5663: A security flaw has been discovered in OFFIS DCMTK up to 3.7.0

Q: How do I fix CVE-2026-5663?

dcmtk: upgrade to newer than 3.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-5663 being exploited?

CVE-2026-5663 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5663 affect?

CVE-2026-5663 affects dcmtk. Severity is high (CVSS 7.3). A security flaw has been discovered in OFFIS DCMTK up to 3.7.0. This impacts the function executeOnReception/executeOnEndOfStudy of the file dcmnet/apps/storescp.cc of the component storescp. Performing a manipulation results in os command

Q: How urgent is CVE-2026-5663?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.3REMOTEUPGRADE

CVE-2026-5663 is a high-severity flaw (CVSS 7.3) affecting dcmtk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security flaw has been discovered in OFFIS DCMTK up to 3.7.0. This impacts the function executeOnReception/executeOnEndOfStudy of the file dcmnet/apps/storescp.cc of the component storescp. Performing a manipulation results in os command injection. Remote exploitation of the attack is possible. The patch is named edbb085e45788dccaf0e64d71534cfca925784b8. Applying a patch is the recommended action to fix this issue.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2026-04-06
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: offis

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-06 15:17 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

offis dcmtk UPGRADE

Affected: <= 3.7.0

Fixed in: newer than 3.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dcmtk || rpm -q dcmtk || dcmtk --version

2. UPGRADE to newer than 3.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dcmtk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dcmtk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5663?

dcmtk: upgrade to newer than 3.7.0. Exact commands for each OS are on this page.

Is CVE-2026-5663 being exploited?

CVE-2026-5663 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5663 affect?

CVE-2026-5663 affects dcmtk. Severity is high (CVSS 7.3). A security flaw has been discovered in OFFIS DCMTK up to 3.7.0. This impacts the function executeOnReception/executeOnEndOfStudy of the file dcmnet/apps/storescp.cc of the component storescp. Performing a manipulation results in os command

How urgent is CVE-2026-5663?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

References

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