CVE-2025-68617

Published: Dic 23, 2025 Last Modified: Gen 15, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,0
Source: [email protected]
Attack Vector: local
Attack Complexity: high
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS file can trigger a heap-based use-after-free. A concurrently running thread may be pending to unload a DLS file, leading to use of freed memory, if the synthesizer is being concurrently destroyed, or samples of the (unloaded) DLS file are concurrently used to synthesize audio. This issue has been patched in version 2.5.2. The problem will not occur, when explicitly unloading a DLS file (before synth destruction), provided that at the time of unloading, no samples of the respective file are used by active voices. The problem will not occur in versions of FluidSynth that have been compiled without native DLS support.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

EPSS Score Trend (Last 83 Days)

416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Application

Fluidsynth by Fluidsynth

Product Information
Vendor Fluidsynth
Product Fluidsynth
Version Range Affected
From 2.5.0 (inclusive)
To 2.5.2 (exclusive)
cpe:2.3:a:fluidsynth:fluidsynth:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/FluidSynth/fluidsynth/issues/1717
https://github.com/FluidSynth/fluidsynth/issues/1717
https://github.com/FluidSynth/fluidsynth/issues/1728
https://github.com/FluidSynth/fluidsynth/issues/1728
https://github.com/FluidSynth/fluidsynth/commit/685e54cdc44…
https://github.com/FluidSynth/fluidsynth/commit/685e54cdc44911ace31774260bd0c9e…
https://github.com/FluidSynth/fluidsynth/commit/962b9946b5c…
https://github.com/FluidSynth/fluidsynth/commit/962b9946b5cb6b16f0c08b89dd1b701…
https://github.com/FluidSynth/fluidsynth/issues/1717
https://github.com/FluidSynth/fluidsynth/issues/1717
https://github.com/FluidSynth/fluidsynth/issues/1728
https://github.com/FluidSynth/fluidsynth/issues/1728
https://github.com/FluidSynth/fluidsynth/security/advisorie…
https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-ffw2-xvvp-39ch