CVE-2026-123976

EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals

Published Nov 6, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Teunis Van Beelen
Teunis Van Beelen edfbrowser
Vendors & Products Teunis Van Beelen
Teunis Van Beelen edfbrowser
Type Values Removed Values Added
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.
Title EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 10, 2026, 8:02 PM
Reserved
Nov 6, 2026, 5:54 PM
Status
Deferred
Published
Nov 6, 2026, 6:18 PM
Modified
Nov 12, 2026, 9:36 PM