# CVE-2026-12805: dcmtk: A flaw has been found in OFFIS DCMTK up to 3.7.0

CVE-2026-12805 is fixed in dcmtk on 1 platform, first by DEBIAN-CVE-2026-12805, released June 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-12805
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 21, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | dcmtk Debian 12.15 (bookworm) | 3.6.7-9~deb12u4 | [DEBIAN-CVE-2026-12805](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12805.md) | Jun 25, 2026 |
| Linux | dcmtk Debian 13.5 (trixie) | 3.6.9-5+deb13u2 | [DEBIAN-CVE-2026-12805](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12805.md) | Jun 25, 2026 |
| Linux | dcmtk Debian 14 | 3.7.0+really3.7.0-6 | [DEBIAN-CVE-2026-12805](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12805.md) | Jun 25, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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