{"id":"CVE-2026-35505","aliases":["DEBIAN-CVE-2026-35505","EUVD-2026-40420","GHSA-p8qm-mxfj-7vc2","UBUNTU-CVE-2026-35505"],"status":"published","title":"OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00646,"percentile":0.51505,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-401"],"published":"2026-06-30T21:09:46Z","modified":"2026-10-28T02:30:44Z","fixes":[{"ecosystem":"Debian:13","package":"dcmtk","fixed_in":["3.6.9-5+deb13u3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dcmtk","fixed_in":["3.7.0+really3.7.0-7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.7-11","3.6.7-12","3.6.7-13","3.6.7-14","3.6.7-15","3.6.7-8","3.6.7-9","3.6.7-9.1","3.6.7-9~deb12u1","3.6.7-9~deb12u2","3.6.7-9~deb12u3","3.6.7-9~deb12u4","3.6.8-1","3.6.8-2","3.6.8-3","3.6.8-4","3.6.8-5","3.6.8-6","3.6.8-7","3.6.8~git20221024.b8950f9-1","3.6.8~git20221024.b8950f9-2","3.6.8~git20221024.b8950f9-3","3.6.8~git20231027.1549d8c-1","3.6.8~git20231027.1549d8c-2","3.6.9-1","3.6.9-2","3.6.9-3","3.6.9-4","3.6.9-5","3.6.9-6","3.7.0+really3.6.9-1","3.7.0+really3.7.0-0+exp1","3.7.0+really3.7.0-1","3.7.0+really3.7.0-2","3.7.0+really3.7.0-3","3.7.0+really3.7.0-4","3.7.0+really3.7.0-5","3.7.0+really3.7.0-6","3.7.0+really3.7.0-7","3.7.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.9-5+deb13u3"}]}],"versions":["3.6.9-5","3.6.9-5+deb13u1","3.6.9-5+deb13u2"]},{"source":"osv","ecosystem":"Debian:14","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.0+really3.7.0-7"}]}],"versions":["3.6.9-5","3.6.9-6","3.7.0+really3.6.9-1","3.7.0+really3.7.0-0+exp1","3.7.0+really3.7.0-1","3.7.0+really3.7.0-2","3.7.0+really3.7.0-3","3.7.0+really3.7.0-4","3.7.0+really3.7.0-5","3.7.0+really3.7.0-6","3.7.0-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.0-15.1","3.6.1~20150629-5","3.6.1~20150924-4","3.6.1~20150924-5","3.6.1~20150924-5ubuntu0.1~esm1","3.6.1~20150924-5ubuntu0.1~esm2","3.6.1~20150924-5ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2build1","3.6.2-3","3.6.2-3build1","3.6.2-3build2","3.6.2-3build3","3.6.2-3ubuntu0.1~esm1","3.6.2-3ubuntu0.1~esm2","3.6.2-3ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.4-2.1","3.6.4-2.1build1","3.6.4-2.1build2","3.6.4-2.1ubuntu0.1~esm1","3.6.4-2.1ubuntu0.1","3.6.4-2.1ubuntu0.1+esm1","3.6.4-2.1ubuntu0.2","3.6.4-2.1ubuntu0.2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.5-1","3.6.6-3ubuntu1","3.6.6-3ubuntu2","3.6.6-4","3.6.6-5","3.6.6-5ubuntu0.1~esm1","3.6.6-5ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.7-9","3.6.7-9.1build2","3.6.7-9.1build3","3.6.7-9.1build4","3.6.7-9.1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.9-4","3.6.9-5","3.6.9-5build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.7.0+really3.6.9-1","3.7.0+really3.7.0-2","3.7.0+really3.7.0-5","3.7.0+really3.7.0-6","3.7.0+really3.7.0-7ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"dcmtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.9-5build1","3.6.9-6","3.7.0+really3.6.9-1"]}],"products":[{"vendor":"offis dicom","product":"dcmtk toolkit"}],"references":[{"url":"https://github.com/DCMTK/dcmtk/releases/tag/latest","tags":["web","report"]},{"url":"https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-181-01","tags":["advisory","report"]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-181-01.json","tags":["web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35505","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-p8qm-mxfj-7vc2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35505.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-35505","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-35505","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-35505","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-35505","title":"OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T21:09:46.797Z","modified":"2026-07-01T15:40:53.801Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:20:05.15083Z"}],"euvd":[{"id":"EUVD-2026-40420","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T21:09:46Z","modified":"2026-07-01T15:40:53Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:19.446061Z"}],"ghsa":[{"id":"GHSA-p8qm-mxfj-7vc2","title":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory...","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-07-01T00:34:00Z","modified":"2026-07-01T00:34:01Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:09:07.106222Z"}],"nvd":[{"id":"CVE-2026-35505","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T22:16:46.477Z","modified":"2026-10-25T21:10:00.77Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:12:26.866638Z"}],"osv":[{"id":"CVE-2026-35505","title":"OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T21:09:46.797Z","modified":"2026-10-28T02:30:44.785837285Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:45:02.673625Z"},{"id":"DEBIAN-CVE-2026-35505","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T22:16:46.477Z","modified":"2026-10-26T11:47:32.413219762Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"UBUNTU-CVE-2026-35505","description":"An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.","status":"published","published":"2026-06-30T22:16:00Z","modified":"2026-10-17T13:00:02.939009876Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:56:16.686388Z"}]}}