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CVE-2025-56225

26
FAUCET Score

CVE-2025-56225 is a Null Pointer Dereference vulnerability in FluidSynth versions 2.4.6 and earlier, triggered by loading a specially crafted invalid MIDI file. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity that can lead to a complete denial of service. There is currently no evidence of active exploitation, nor are public exploit codes available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, with only one security update from openSUSE noted.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.6CPE matchmatch criteria
cpe:2.3:a:fluidsynth:fluidsynth:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 13th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / FluidSynth/fluidsynth/issues/1602
ExploitIssue Tracking
github.com / FluidSynth/fluidsynth/pull/1607
Issue Tracking