A NULL pointer dereference in the component /libsrc/dcrleccd.cc of DCMTK v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) vi…

published 2025-02-18 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4573

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

A NULL pointer dereference in the component /libsrc/dcrleccd.cc of DCMTK v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) via a crafted DICOM file.

Patch / fix

distros 2 links 2

debian opensuse

dcmtk Debian 12 3.6.7-9~deb12u3
dcmtk Debian 14, Debian 13 3.6.9-4

debian advisories DEBIAN-CVE-2025-25475

dcmtk Package Hub 15 SP6, openSUSE Leap 15.6 3.6.9-bp156.4.6.1
dcmtk openSUSE Tumbleweed 3.6.9-2.1

opensuse advisories openSUSE-SU-2025:0068-1 openSUSE-SU-2025:14823-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-25475 updated 2025-11-21 cvss 6.5

dcmtk: NULL Pointer Dereference in DCMTK dcrleccd.cc Leading to DoS

Red Hat Enterprise Linux AI (RHEL AI) dcmtk
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-02-20)

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

CWE-476 NULL Pointer Dereference

References

git.dcmtk.org /?p=dcmtk.git;a=commit;h=bffa3e9116abb7038b432443f16b1bd390e80245
patch
github.com /DCMTK/dcmtk/commit/bffa3e9116abb7038b432443f16b1bd390e80245
patch
lists.debian.org /debian-lts-announce/2025/06/msg00025.html
mailing-list, third-party-advisory

Sources

CVE List CVE-2025-25475
NVD CVE-2025-25475

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary