CVE-2025-56225 Affecting fluidsynth package, versions <2.4.7+dfsg-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-FLUIDSYNTH-14909069
- published10 Jan 2026
- disclosed9 Jan 2026
Introduced: 9 Jan 2026
CVE-2025-56225 (opens in a new tab)How to fix?
Upgrade Debian:unstable fluidsynth to version 2.4.7+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream fluidsynth package and not the fluidsynth package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.