{"id":"CVE-2026-5442","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-5442","generatedAt":"2026-10-28T13:13:30.743Z","title":"A heap buffer overflow vulnerability exists in the DICOM image decoder.","description":"A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.","published":"2026-04-09T15:16:17.000Z","lastModified":"2026-10-26T21:10:00.000Z","status":"Analyzed","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["orthanc-server/orthanc"],"epss":{"score":0.00598,"percentile":0.48417,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://kb.cert.org/vuls/id/536588","tags":["Third Party Advisory","VDB Entry"],"source":"cret@cert.org"},{"url":"https://www.machinespirits.de/","tags":["Not Applicable"],"source":"cret@cert.org"},{"url":"https://www.orthanc-server.com/","tags":["Product"],"source":"cret@cert.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-5442","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}