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.

The EPSS score is 0.00121.

Exploitation none

Automatable no

Technical Impact partial

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

No data.

No data.

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Vendors Products
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Edfbrowser Subscribe

Project Subscriptions

Vendors Products
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Edfbrowser Subscribe
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

Thu, 12 Nov 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 06 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Teunis Van Beelen
Teunis Van Beelen edfbrowser
Vendors & Products Teunis Van Beelen
Teunis Van Beelen edfbrowser

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: 2026-11-10T20:02:58.581Z

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

Link: CVE-2026-123976

cve-icon Vulnrichment

Updated: 2026-11-10T20:02:43.540Z

cve-icon NVD

Status : Received

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

Modified: 2026-11-10T20:19:04.017

Link: CVE-2026-123976

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T21:12:39Z

Weaknesses