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Memory Buffer Bounds ErrorWeakness · CWE-119

CVE-2026-12805

MEDIUM · 6.3 CVSS v3.1 Published 2026-06-21
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
70/100
Remediation priority · Elevated
Remotely reachable No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-119

The program reads or writes outside the bounds of an allocated buffer, corrupting adjacent memory. With crafted input an attacker can overwrite control data and, with effort, redirect execution to their own code. Remediation ranges from bounds checking and safe library functions to compiler mitigations, usually alongside a careful audit of the surrounding code.

General guidance for the memory buffer bounds error class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

Any DCMTK release newer than 3.7.0 containing the fix (commit 1d4b3815c0987840a983160bfc671fef63a3105b)

  1. 1. Identify the current DCMTK version in use (e.g., via 'dcmtk-config --version' or checking installed packages)
  2. 2. Obtain the fixed DCMTK version containing commit 1d4b3815c0987840a983160bfc671fef63a3105b
  3. 3. Download the updated DCMTK source code or pre-built packages from the official DCMTK distribution (https://dcmtk.org or GitHub releases)
  4. 4. If building from source: ./configure, make, make install with appropriate prefix and flags
  5. 5. Replace vulnerable binaries/libraries with the fixed versions
  6. 6. Restart any services using DCMTK
  7. 7. Verify the fix by testing XML parsing functionality that previously triggered the vulnerability

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-12805 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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