CVE-2023-30406Public exploit

Interpreter crash via invalid property lookup

Published Apr 24, 2023 · Updated Feb 5, 2025

Denial of service in JerryScript commit 1a2c047 allows local users to crash the interpreter by executing crafted JavaScript. A crafted default-parameter expression with nested eval calls reaches ecma_find_named_property, which dereferences near-null address 0x4 during property lookup. Execution by a user or embedding application is required, and the demonstrated consequence is process termination without data access or modification.

CVSS severity5.5
Medium
EPSS probability0.29%
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 JerryScript commit 1a2c047 allows local users to crash the interpreter by executing crafted JavaScript. A crafted default-parameter expression with nested eval calls reaches ecma_find_named_property, which dereferences near-null address 0x4 during property lookup. Execution by a user or embedding application is required, and the demonstrated consequence is process termination without data access or modification.

The record

CVE
CVE-2023-30406
Published
Apr 24, 2023
Updated
Feb 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, CWE-770
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling

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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