{"id":"CVE-2026-123976","aliases":["DEBIAN-CVE-2026-123976","EUVD-2026-118395","GHSA-26mh-qcgf-vfgg","UBUNTU-CVE-2026-123976"],"status":"published","title":"EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00121,"percentile":0.01958,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-11-06T17:58:31Z","modified":"2026-11-11T10:47:27Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.00+dfsg-1","2.04+dfsg-1","2.05+dfsg-1","2.05+dfsg-2","2.06+dfsg-1","2.07+dfsg-1","2.09+dfsg-1","2.10+dfsg-1","2.11+dfsg-1","2.12+dfsg-1","2.13+dfsg-1","2.14+dfsg-1","2.15+dfsg-1","2.16+dfsg-1"]},{"source":"osv","ecosystem":"Debian:13","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12+dfsg-1","2.13+dfsg-1","2.14+dfsg-1","2.15+dfsg-1","2.16+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12+dfsg-1","2.13+dfsg-1","2.14+dfsg-1","2.15+dfsg-1","2.16+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.56-1","1.57-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.58-1","1.60-1","1.61+dfsg-1","1.62+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.68+dfsg-1","1.70+dfsg-1","1.71+dfsg-1","1.72+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.81+dfsg-1","1.86+dfsg-1","1.87+dfsg-1","1.88+dfsg-1","1.90+dfsg-1","1.91+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.04+dfsg-1","2.05+dfsg-1","2.05+dfsg-2","2.06+dfsg-1","2.06+dfsg-1build1","2.06+dfsg-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.14+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"edfbrowser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12+dfsg-1","2.13+dfsg-1","2.14+dfsg-1"]}],"products":[{"vendor":"teunis van beelen","product":"edfbrowser"}],"references":[{"url":"https://gitlab.com/Teuniz/EDFbrowser/-/commit/f64cec4a22af34adb7bbdf5fec12cb3a880ddc5a","tags":["patch","fix","report"]},{"url":"https://gitlab.com/Teuniz/EDFbrowser/-/tags/v2.16","tags":["release-notes","advisory","report"]},{"url":"https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/check_edf_file.c#L686-L708","tags":["technical-description","article","report"]},{"url":"https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/global.h#L250","tags":["technical-description","article","report"]},{"url":"https://gitlab.com/Teuniz/EDFbrowser","tags":["product","package","report"]},{"url":"https://www.vulncheck.com/advisories/edfbrowser-before-2.16-out-of-bounds-write-via-check-edf-file-annotation-signals","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123976","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-26mh-qcgf-vfgg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123976.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-123976","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-123976","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-123976","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-123976","title":"EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T17:58:31.6Z","modified":"2026-11-10T20:02:58.581Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-10T22:18:26.838446Z"}],"euvd":[{"id":"EUVD-2026-118395","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T17:58:31Z","modified":"2026-11-10T20:02:58Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-06T21:07:02.228784Z"}],"ghsa":[{"id":"GHSA-26mh-qcgf-vfgg","title":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that...","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T18:35:25Z","modified":"2026-11-06T18:35:32Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-06T19:01:27.658277Z"}],"nvd":[{"id":"CVE-2026-123976","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T18:18:05.877Z","modified":"2026-11-10T20:19:04.017Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-10T22:21:31.83577Z"}],"osv":[{"id":"CVE-2026-123976","title":"EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T17:58:31.6Z","modified":"2026-11-12T07:04:15.887189751Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-08T07:31:57.993959Z"},{"id":"DEBIAN-CVE-2026-123976","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-06T18:18:05.877Z","modified":"2026-11-11T10:00:57.171504441Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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":"medium"}],"updated_at":"2026-11-11T10:35:16.464644Z"},{"id":"UBUNTU-CVE-2026-123976","description":"EDFbrowser before 2.16 contains an out-of-bounds write vulnerability in check_edf_file() that allows attackers to overflow the 256-element annot_ch array by supplying excessive annotation signals. Attackers can craft an EDF+ or BDF+ file with more than 256 annotation signals to overwrite edfhdrblock members, including the signal parameter pointer, crashing the application when opened.","status":"published","published":"2026-11-09T00:00:00Z","modified":"2026-11-10T02:50:22.195912121Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-10T03:18:58.105788Z"}]}}