CVE-2026-123976 EDFbrowser before 2.16 Out-of-Bounds Write via check_edf_file() Annotation Signals
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123976?
CVE-2026-123976 is a medium-severity vulnerability in Teunis van Beelen EDFbrowser, published on 6 Nov 2026.
Official 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.
Weakness: CWE-787
Which versions are affected by CVE-2026-123976?
How do I fix CVE-2026-123976?
No fix has been published for CVE-2026-123976 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123976 being exploited?
There is no known exploitation of CVE-2026-123976 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-123976, GHSA-26mh-qcgf-vfgg, UBUNTU-CVE-2026-123976.