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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Teunis van Beelen EDFbrowser unaffected
Version Status Constraints
0 affected < 2.16

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gitlab.com/Teuniz/EDFbrowser cve-icon cve-icon
https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/check_edf_file.c#L686-L708 cve-icon cve-icon
https://gitlab.com/Teuniz/EDFbrowser/-/blob/v2.15/global.h#L250 cve-icon cve-icon
https://gitlab.com/Teuniz/EDFbrowser/-/commit/f64cec4a22af34adb7bbdf5fec12cb3a880ddc5a cve-icon cve-icon
https://gitlab.com/Teuniz/EDFbrowser/-/tags/v2.16 cve-icon cve-icon
https://www.vulncheck.com/advisories/edfbrowser-before-2.16-out-of-bounds-write-via-check-edf-file-annotation-signals cve-icon cve-icon
History

Fri, 06 Nov 2026 18:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-06T17:58:31.600Z

Reserved: 2026-11-06T17:54:14.114Z

Link: CVE-2026-123976

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-06T18:18:05.877

Modified: 2026-11-06T18:18:05.877

Link: CVE-2026-123976

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses