CVE-2024-33431Public exploitNetwork attack vector

Application crash via malformed WAV conversion

Published May 1, 2024 · Updated Aug 2, 2024

Denial of service in stsaz Phiola 2.0-rc22 allows remote attackers to crash the application by supplying a crafted WAV file. The aconv_prepare path in src/afilter/conv.c reaches a fatal floating-point exception at line 115 while converting malformed audio parameters instead of rejecting them. Exploitation requires a user to open or convert the file, and the demonstrated consequence is termination of the Phiola process.

CVSS severity6.5
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in stsaz Phiola 2.0-rc22 allows remote attackers to crash the application by supplying a crafted WAV file. The aconv_prepare path in src/afilter/conv.c reaches a fatal floating-point exception at line 115 while converting malformed audio parameters instead of rejecting them. Exploitation requires a user to open or convert the file, and the demonstrated consequence is termination of the Phiola process.

The record

CVE
CVE-2024-33431
Published
May 1, 2024
Updated
Aug 2, 2024
Vendor
stsaz
Product
Phiola
Classifications
CWE-670
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=- <=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

stsaz · Phiolaversion=- <=2.0

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-670Always-Incorrect Control Flow Implementation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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