CVE-2024-33430Public exploitNetwork attack vector

Service crash via invalid PCM conversion write

Published May 1, 2024 · Updated Aug 2, 2024

Invalid memory write in stsaz Phiola 2.0-rc22 allows remote attackers to crash the converter by supplying a crafted WAV file. A 4,127,239,236 Hz sample-rate value reaches pcm_convert at pcm_convert.h line 513, where PCM conversion writes through an invalid destination address. Processing the attacker-supplied file is required; the public reproduction demonstrates a process crash, not controlled code execution.

CVSS severity8.8
High
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid memory write in stsaz Phiola 2.0-rc22 allows remote attackers to crash the converter by supplying a crafted WAV file. A 4,127,239,236 Hz sample-rate value reaches pcm_convert at pcm_convert.h line 513, where PCM conversion writes through an invalid destination address. Processing the attacker-supplied file is required; the public reproduction demonstrates a process crash, not controlled code execution.

The record

CVE
CVE-2024-33430
Published
May 1, 2024
Updated
Aug 2, 2024
Vendor
stsaz
Product
Phiola
Classifications
CWE-94, CWE-482, T1204.002, T1203
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=v2.0-rc22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

stsaz · Phiolaversion=v2.0-rc22

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-94Improper Control of Generation of Code ('Code Injection')
CWE-482Comparing instead of Assigning
T1204.002Malicious File
T1203Exploitation for Client Execution

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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