{"id":"CVE-2026-5444","aliases":["DEBIAN-CVE-2026-5444","EUVD-2026-20924","GHSA-fpm7-vpjm-5gg2","UBUNTU-CVE-2026-5444"],"status":"published","title":"Heap Buffer Overflow in PAM Image Buffer Allocation","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00165,"percentile":0.05768,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2026-04-09T14:42:30Z","modified":"2026-10-26T11:47:33Z","fixes":[{"ecosystem":"Debian:14","package":"orthanc","fixed_in":["1.12.10+dfsg-4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1+dfsg-2","1.10.1+dfsg-2+deb12u1","1.12.1+dfsg-1","1.12.1+dfsg-2","1.12.1+dfsg-3","1.12.1+dfsg-4","1.12.10+dfsg-1","1.12.10+dfsg-2","1.12.10+dfsg-3","1.12.10+dfsg-4","1.12.10+dfsg-5","1.12.11+dfsg-1","1.12.11+dfsg-2","1.12.11+dfsg-3","1.12.11+dfsg-4","1.12.11+dfsg-5","1.12.11+dfsg-6","1.12.11+dfsg-7","1.12.11+dfsg-8","1.12.2+dfsg-1","1.12.3+dfsg-1","1.12.3+dfsg-2","1.12.4+dfsg-1","1.12.4+dfsg-2","1.12.4+dfsg-3","1.12.4+dfsg-4","1.12.5+dfsg-1","1.12.5+dfsg-2","1.12.6+dfsg-1","1.12.7+dfsg-1","1.12.7+dfsg-2","1.12.7+dfsg-3","1.12.7+dfsg-4","1.12.9+dfsg-1","1.12.9+dfsg-2","1.13.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:13","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.10+dfsg-1","1.12.10+dfsg-2","1.12.10+dfsg-3","1.12.10+dfsg-4","1.12.10+dfsg-5","1.12.11+dfsg-1","1.12.11+dfsg-2","1.12.11+dfsg-3","1.12.11+dfsg-4","1.12.11+dfsg-5","1.12.11+dfsg-6","1.12.11+dfsg-7","1.12.11+dfsg-8","1.12.7+dfsg-4","1.12.9+dfsg-1","1.12.9+dfsg-2","1.13.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.10+dfsg-4"}]}],"versions":["1.12.10+dfsg-1","1.12.10+dfsg-2","1.12.10+dfsg-3","1.12.7+dfsg-4","1.12.9+dfsg-1","1.12.9+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.4+dfsg-1","0.9.4+dfsg-2","0.9.5+dfsg-1","1.0.0+dfsg-1","1.0.0+dfsg-1build1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0+dfsg-1build1","1.3.0+dfsg-1build2","1.3.1+dfsg-1","1.3.1+dfsg-1build1","1.3.1+dfsg-1build2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.7+dfsg-2","1.5.8+dfsg-2","1.5.8+dfsg-2ubuntu2","1.5.8+dfsg-2ubuntu3","1.5.8+dfsg-2ubuntu4","1.5.8+dfsg-2ubuntu5","1.5.8+dfsg-2ubuntu6"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.2+really1.9.1+dfsg-1","1.9.7+dfsg-3ubuntu1","1.9.7+dfsg-3ubuntu2","1.9.7+dfsg-4","1.9.7+dfsg-5","1.9.7+dfsg-6","1.10.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.1+dfsg-3","1.12.1+dfsg-4","1.12.1+dfsg-4build1","1.12.2+dfsg-1","1.12.2+dfsg-1build3","1.12.2+dfsg-1build4"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.6+dfsg-1","1.12.7+dfsg-4","1.12.7+dfsg-4build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.10+dfsg-2","1.12.11+dfsg-8","1.12.11+dfsg-8build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"orthanc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.7+dfsg-4build2","1.12.9+dfsg-2","1.12.10+dfsg-1","1.12.10+dfsg-1build1","1.12.10+dfsg-2"]}],"products":[{"vendor":"orthanc","product":"dicom server"},{"vendor":"orthanc-server","product":"orthanc"}],"references":[{"url":"https://www.orthanc-server.com/","tags":["Product","report"]},{"url":"https://www.machinespirits.de/","tags":["Not Applicable","report"]},{"url":"https://kb.cert.org/vuls/id/536588","tags":["Third Party Advisory","VDB Entry","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5444"},{"url":"https://www.machinespirits.de"},{"url":"https://www.orthanc-server.com"},{"url":"https://github.com/advisories/GHSA-fpm7-vpjm-5gg2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-5444","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-5444","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-5444","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-5444","title":"Heap Buffer Overflow in PAM Image Buffer Allocation","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T14:42:30.696Z","modified":"2026-04-14T16:34:57.706Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T13:39:39.001586Z"}],"euvd":[{"id":"EUVD-2026-20924","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T14:42:30Z","modified":"2026-04-14T16:34:57Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:24:25.607055Z"}],"ghsa":[{"id":"GHSA-fpm7-vpjm-5gg2","title":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc...","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T15:35:08Z","modified":"2026-04-14T21:31:44Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:07:30.088478Z"}],"nvd":[{"id":"CVE-2026-5444","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T15:16:16.76Z","modified":"2026-10-26T00:10:00.15Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:12:13.902911Z"}],"osv":[{"id":"DEBIAN-CVE-2026-5444","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T15:16:16.76Z","modified":"2026-10-26T11:47:33.045456215Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:57.236551Z"},{"id":"UBUNTU-CVE-2026-5444","description":"A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.","status":"published","published":"2026-04-09T15:16:00Z","modified":"2026-10-17T12:59:05.282860608Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"}]}}