CVE-2021-41737Public exploitNetwork attack vector

Compiler crash via crafted DSP source

Published Nov 10, 2024 · Updated Nov 19, 2024

Uncontrolled recursion in GRAME-CNCM Faust 2.23.1 allows attackers to exhaust stack space by compiling a crafted DSP source file. The CVE record identifies uncontrolled recursion, while the upstream report records a stack overflow ending in strcmp without disclosing the recursive call path or missing termination condition. Processing the supplied route expression is the required gate, and the bounded consequence is interruption of that compiler process.

CVSS severity7.5
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in GRAME-CNCM Faust 2.23.1 allows attackers to exhaust stack space by compiling a crafted DSP source file. The CVE record identifies uncontrolled recursion, while the upstream report records a stack overflow ending in strcmp without disclosing the recursive call path or missing termination condition. Processing the supplied route expression is the required gate, and the bounded consequence is interruption of that compiler process.

The record

CVE
CVE-2021-41737
Published
Nov 10, 2024
Updated
Nov 19, 2024
Vendor
GRAME-CNCM
Product
Faust
Classifications
CWE-674, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 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=2.23.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GRAME-CNCM · Faustversion=2.23.1

Published CVSS scores

7.5CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-674Uncontrolled Recursion
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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