CVE-2026-5437 json
Out-of-Bounds Read in DicomStreamReader
published 7mo ago modified 16d ago also EUVD-2026-20913
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.
Patch / fix
- orthanc-server orthanc 1.12.11
- orthanc Debian 14 1.12.10+dfsg-4
debian advisories DEBIAN-CVE-2026-5437
Is CVE-2026-5437 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6mo ago
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-11).
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 |
Affected products
- Orthanc DICOM Server
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
orthanc-server.com
/
product
-
machinespirits.de
/
not-applicable
-
kb.cert.org
/vuls/id/536588
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2026-5437
- NVD CVE-2026-5437
Fencer Intel 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.