CVE-2026-123976

medium

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.

References

https://www.vulncheck.com/advisories/edfbrowser-before-2.16-out-of-bounds-write-via-check-edf-file-annotation-signals

https://gitlab.com/Teuniz/EDFbrowser/-/tags/v2.16

https://gitlab.com/Teuniz/EDFbrowser/-/commit/f64cec4a22af34adb7bbdf5fec12cb3a880ddc5a

https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/global.h#L250

https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/check_edf_file.c#L686-L708

https://gitlab.com/Teuniz/EDFbrowser

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-118395

Details

Source: Mitre, NVD

Published: 2026-11-06

Updated: 2026-11-06

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00121