Microsoft Defender Denial of Service Vulnerability
Conclusion & alert: CVE-2023-24860 is rated Moderate Risk (61.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.09%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-02-05 | 3.85% | 4.09% | +0.24% |
| 2 | 2026-01-04 | 3.67% | 3.85% | +0.18% |
| 3 | 2025-11-21 | — | 3.67% | — |
Full EPSS history (18 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | malware_protection_engine | < 1.1.20200.4 | cpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24860 | Patch Vendor Advisory |