OnlyPatch
Windows SMB

CVE-2024-43642 — Windows SMB Denial of Service Vulnerability

Important CVSS 7.5 EPSS 0.62257 2024-11 archive

Executive Summary

None

Overview

7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Denial of Service
Weakness CWE-416: Use After Free
Released Nov 12 2024
Last Updated Nov 12 2024
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.62257 — 0.99096 percentile
NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5

EPSS Score

0.62257
probability of exploitation in the next 30 days
0.99096 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

5 affected products
Product KB Article Severity Impact Restart Required
Windows 11 Version 22H2 for ARM64-based Systems 5046633 (Security Update) Important Denial of Service Yes
Windows 11 Version 22H2 for x64-based Systems 5046633 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for ARM64-based Systems 5046633 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for x64-based Systems 5046633 (Security Update) Important Denial of Service Yes
Windows 11 Version 24H2 for ARM64-based Systems 5046696 (SecurityHotpatchUpdate) 5046617 (Security Update) Important Denial of Service 5044284 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.2240 10.0.26100.2314 Yes None Windows 11 Version 24H2 for x64-based Systems 5046696 (SecurityHotpatchUpdate) 5046617 (Security Update) Important Denial of Service 5044284 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.2240 10.0.26100.2314 Yes None Windows Server 2022 5046616 (Security Update) 5046698 (SecurityHotpatchUpdate) Important Denial of Service 5044281 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.2849 10.0.20348.2819 Yes None Windows Server 2022 (Server Core installation) 5046616 (Security Update) 5046698 (SecurityHotpatchUpdate) Important Denial of Service 5044281 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.2849 10.0.20348.2819 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) 5046618 (Security Update) Important Denial of Service Yes

Patches

2 patches
Article Type Restart
5046633 Security Update Yes
5046618 Security Update Yes

Known Exploits

Acknowledgments

Andrew Ruddick

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