CVE-2025-46687

MEDIUM
2025-04-27 [email protected]
5.6
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

4
Analysis Generated
Mar 28, 2026 - 18:38 vuln.today
Patch Released
Mar 28, 2026 - 18:38 nvd
Patch available
PoC Detected
Jan 14, 2026 - 17:30 vuln.today
Public exploit code
CVE Published
Apr 27, 2025 - 20:15 nvd
MEDIUM 5.6

Tags

Buffer Overflow Denial Of Service Quickjs

Description

quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.

Analysis

quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. Rated medium severity (CVSS 5.6), this vulnerability is no authentication required. Public exploit code available.

Technical Context

This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected. Affected products include: Bellard Quickjs, Quickjs-Ng Quickjs. Version information: through 0.9.0.

Affected Products

Bellard Quickjs, Quickjs-Ng Quickjs.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Set resource limits, implement rate limiting, validate input sizes.

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +28
POC: +20

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CVE-2025-46687 vulnerability details – vuln.today
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