CVE-2024-25201Public exploitNetwork attack vector

Interpreter crash via malformed Date string conversion

Published Feb 7, 2024 · Updated Jun 17, 2025

Out-of-bounds read in Espruino 2.20 allows remote attackers to crash its interpreter via crafted JavaScript that formats a malformed Date. jsvStringIteratorPrintfCallback reads outside valid memory while Date.toString() formats a Date constructed with the demonstrated negative value. Execution of attacker-controlled JavaScript containing that construction is required, and the demonstrated consequence is a process crash.

CVSS severity7.5
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Espruino 2.20 allows remote attackers to crash its interpreter via crafted JavaScript that formats a malformed Date. jsvStringIteratorPrintfCallback reads outside valid memory while Date.toString() formats a Date constructed with the demonstrated negative value. Execution of attacker-controlled JavaScript containing that construction is required, and the demonstrated consequence is a process crash.

The record

CVE
CVE-2024-25201
Published
Feb 7, 2024
Updated
Jun 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA-ADPCVSS: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-125Out-of-bounds Read

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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