CVE-2024-24559Public exploit

Incorrect bytecode via miscalculated sha3_64 stack height

Published Feb 5, 2024 · Updated Aug 26, 2024

Code-generation error in Vyper 0.3.10 and earlier allows local users to produce incorrect EVM bytecode through hand-written IR. In compile_ir.py, sha3_64 compiles its second argument without incrementing the tracked stack height, causing an incorrect DUP instruction. The flaw is unreachable from ordinary Vyper source compilation and requires direct use of the fang IR compiler, so compiler-generated IR and normally compiled contracts are unaffected.

CVSS severity3.7
Low
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code-generation error in Vyper 0.3.10 and earlier allows local users to produce incorrect EVM bytecode through hand-written IR. In compile_ir.py, sha3_64 compiles its second argument without incrementing the tracked stack height, causing an incorrect DUP instruction. The flaw is unreachable from ordinary Vyper source compilation and requires direct use of the fang IR compiler, so compiler-generated IR and normally compiled contracts are unaffected.

The record

CVE
CVE-2024-24559
Published
Feb 5, 2024
Updated
Aug 26, 2024
Vendor
Vyper
Product
Vyper
Classifications
CWE-327
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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=<= 0.3.10
  2. Affected versionversion=0.3.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Vyper · Vyperversion=<= 0.3.10; version=0.3.10

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.7GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm

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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