CVE-2026-123976
EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | teunis van beelen |
| Product | edfbrowser |
| Published | Nov 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Teunis van Beelen / EDFbrowser
0 < 2.16
References
gitlab.com: https://gitlab.com/Teuniz/EDFbrowser/-/commit/f64cec4a22af34adb7bbdf5fec12cb3a880ddc5a gitlab.com: https://gitlab.com/Teuniz/EDFbrowser/-/tags/v2.16 gitlab.com: https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/check_edf_file.c#L686-L708 gitlab.com: https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/global.h#L250 gitlab.com: https://gitlab.com/Teuniz/EDFbrowser vulncheck.com: https://www.vulncheck.com/advisories/edfbrowser-before-2.16-out-of-bounds-write-via-check-edf-file-annotation-signals
Credits
Deus Rex