CVE-2025-25472: A buffer overflow in DCMTK git master v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) via a cr

Routine

MEDIUM 5.3REMOTEWATCHLISTDOWNGRADEMITIGATE

CVE-2025-25472 is a medium-severity flaw (CVSS 5.3) affecting dcmtk, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A buffer overflow in DCMTK git master v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) via a crafted DCM file.

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-02-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · offis

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-18 23:15 UTCPublished CVE record published
2026-06-17 09:00 UTCUpdated Record last modified

offis dcmtk DOWNGRADE

Affected: 3.6.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.6.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.6.9 (Debian / Ubuntu)

apt-cache madison dcmtk sudo apt install dcmtk=<VERSION_BEFORE_3.6.9> sudo apt-mark hold dcmtk

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dcmtk sudo dnf downgrade dcmtk-<VERSION_BEFORE_3.6.9> sudo dnf versionlock add dcmtk

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2025-25472?

dcmtk: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-25472 being exploited?

CVE-2025-25472 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-2025-25472 affect?

CVE-2025-25472 affects dcmtk, debian linux. Severity is medium (CVSS 5.3). A buffer overflow in DCMTK git master v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) via a crafted DCM file.

How urgent is CVE-2025-25472?

Priority 36/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities · Git vulnerabilities

Related CVEs

CVE-2026-5663 HIGH 7.3 UPGRADE A security flaw has been discovered in OFFIS DCMTK up to 3.7.0
CVE-2025-9732 MEDIUM 5.3 UPGRADE A vulnerability was identified in DCMTK up to 3.6.9
CVE-2025-2357 MEDIUM 6.3 DOWNGRADE A vulnerability was found in DCMTK 3.6.9
CVE-2025-25475 HIGH 7.5 DOWNGRADE MITIGATE A NULL pointer dereference in the component /libsrc/dcrleccd.cc of DCMTK v3.6.9+ DEV allows attackers to cause
CVE-2025-25474 MEDIUM 6.5 DOWNGRADE MITIGATE DCMTK v3.6.9+ DEV was discovered to contain a buffer overflow via the component /dcmimgle/diinpxt.h.

References

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