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CVE-2023-24860

26
FAUCET Score

CVE-2023-24860 is a Denial of Service vulnerability affecting Microsoft Defender's Malware Protection Engine. With a CVSS score of 7.5 (High), it can be exploited remotely without user interaction, leading to a complete denial of service. While no public exploit code or active exploitation has been observed, its presence on Microsoft's April 2023 Patch Tuesday and limited community discussion indicate awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.20200.4CPE matchmatch criteria
cpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 75th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Malware Protection EngineFixed in: 1.1.20200.4

Vendor Advisories (1)

microsoft2023-Apr/CVE-2023-24860Important

Microsoft Defender Denial of Service Vulnerability

Apr 11, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-24860
PatchVendor Advisory