Is CVE-2023-43338 actively exploited?

CVE-2023-43338 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2023-43338?

CVE-2023-43338 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2023-43338?

Patch guidance is available from cesanta security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-43338.

Fix CVE-2023-43338 - CRITICAL cesanta mjs

Description

Cesanta mjs v2.20.0 was discovered to contain a function pointer hijacking vulnerability via the function mjs_get_ptr(). This vulnerability allows attackers to execute arbitrary code via a crafted input.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: CESANTA
Published: 9/23/2023
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

cesanta : mjs

Remediation Guidance

Executive Summary

Cite this page

CVE-2023-43338. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-43338

View on NIST NVD

CVE-2023-43338 vulnerability