What is CVE-2024-43489?

CVE-2024-43489 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 6.5/10. Published 2024-09-19.

How severe is CVE-2024-43489?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microsoft Edge Chromium

CVE-2024-43489

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Published 2024-09-19 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.7th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Microsoft Edge Chromium
Microsoft Edge (Chromium-Based) — versions 1.0.0

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43489 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2024-43489?: CVE-2024-43489 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 6.5/10. Published 2024-09-19.
How severe is CVE-2024-43489?: Medium severity. CVSS v3 base score is 6.5 out of 10.