Hi,

The following vulnerability was published for dcmtk.

CVE-2026-12805[0]:
| A flaw has been found in OFFIS DCMTK up to 3.7.0. The affected
| element is the function XMLNode::parseFile in the library
| ofstd/libsrc/ofxml.cc. Executing a manipulation can lead to heap-
| based buffer overflow. The attack may be performed from remote. The
| exploit has been published and may be used. This patch is called
| 1d4b3815c0987840a983160bfc671fef63a3105b. It is best practice to
| apply a patch to resolve this issue. The vendor was contacted early,
| responded in a very professional manner and quickly released a fixed
| version of the affected product.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-12805
https://www.cve.org/CVERecord?id=CVE-2026-12805
[1] https://support.dcmtk.org/redmine/issues/1208
[2] https://git.dcmtk.org/?p=dcmtk.git;a=commit;h=1d4b3815c0987840a983160bfc671fef63a3105b

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

Upstream issue #1208:
indicates that among other versions, 3.6.7 and 3.6.9 are
affected.  Quoting upstream:

Have a nice day,  :)

Hello,

Bug #1140562 in dcmtk reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/med-team/dcmtk/-/commit/7b857e61e8303634d6327d93e3499558f63d636b
This patch fixes a risk of buffer overflow by ensuring negative error
codes in XMLNode::parseFile are properly handled, as well a NULL
values.

Closes: #1140562
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1140562

We believe that the bug you reported is fixed in the latest version of
dcmtk, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1140562@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Étienne Mollier <emollier@debian.org> (supplier of updated dcmtk package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Mon, 22 Jun 2026 22:22:11 +0200
Source: dcmtk
Architecture: source
Version: 3.7.0+really3.7.0-6
Distribution: unstable
Urgency: medium
Maintainer: Debian Med Packaging Team <debian-med-packaging@lists.alioth.debian.org>
Changed-By: Étienne Mollier <emollier@debian.org>
Closes: 1140562
Changes:
 dcmtk (3.7.0+really3.7.0-6) unstable; urgency=medium
 .
   * CVE-2026-12805.patch: new: fix CVE-2026-12805.
     This patch fixes a risk of buffer overflow by ensuring negative error
     codes in XMLNode::parseFile are properly handled, as well a NULL
     values. (Closes: #1140562)
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