CVE-2025-56225

Exp

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.

Published: 2026-01-09 Last update: 2026-01-23 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-56225 is rated Exploit Available (50/100): CVSS High severity, with low exploitation likelihood (EPSS 0.02%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2025-56225

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-56225

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-18 0.05% 0.02% -0.03%
2 2026-02-10 0.05% 0.05% +0.00%
3 2026-01-23 — 0.05% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-56225

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-56225

OS Trackers for CVE-2025-56225

vendor priority summary link
alpine — CVE-2025-56225: 1 source package rows (fluidsynth); 7 state rows across 1 repos (edge-community); fixed 0, open 7. https://security.alpinelinux.org/vuln/CVE-2025-56225
debian not yet assigned CVE-2025-56225 not yet assigned priority: Debian including 1 source packages (fluidsynth), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2025-56225
suse high CVE-2025-56225 severity important: SUSE including 14 source package names (13.2-9.1:libxml2-2-2.11.6-8.1, 2.1.3-6.31:libxml2-2-2.11.6-8.1, …), 29 product×package rows across 16 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (16 product lines)): Fixed 29. https://www.suse.com/security/cve/CVE-2025-56225/
ubuntu medium CVE-2025-56225 medium priority: Ubuntu including 1 source packages (fluidsynth), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): needs-triage 6, ignored 1, not-affected 1, released 1. https://ubuntu.com/security/CVE-2025-56225

Affected software / configurations for CVE-2025-56225

Vendor Product Version Raw CPE
fluidsynth fluidsynth <= 2.4.6 cpe:2.3:a:fluidsynth:fluidsynth:*:*:*:*:*:*:*:*

References for CVE-2025-56225

cvelogic Threat Intelligence