What is CVE-2025-56225?

CVE-2025-56225 is a high-severity vulnerability in Fluidsynth, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-01-09.

How severe is CVE-2025-56225?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Fluidsynth

CVE-2025-56225

fluidsynth-2.4.6 and earlier versions is vulnerable to Null pointer dereference in fluid_synth_monopoly.c, that can be triggered when loading an invalid midi file.

EPSS: 0.004 (34.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Fluidsynth
N/a — versions n/a

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Issue Tracking)

Frequently asked questions

What is CVE-2025-56225?: CVE-2025-56225 is a high-severity vulnerability in Fluidsynth, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-01-09.
How severe is CVE-2025-56225?: High severity. CVSS v3 base score is 7.5 out of 10.