CVE-2024-38063
published 2024-08-13CVE-2024-38063: Windows TCP/IP Remote Code Execution Vulnerability
PriorityP184critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EXPLOIT
EPSS
70.56%
99.3th percentile
Windows TCP/IP Remote Code Execution Vulnerability
Affected
49 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.20751 | 10.0.10240.20751 |
| microsoft | windows_10_1607 | < 10.0.14393.7259 | 10.0.14393.7259 |
| microsoft | windows_10_1809 | < 10.0.17763.6189 | 10.0.17763.6189 |
| microsoft | windows_10_21h2 | < 10.0.19044.4780 | 10.0.19044.4780 |
| microsoft | windows_10_22h2 | < 10.0.19045.4780 | 10.0.19045.4780 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.20751 | 10.0.10240.20751 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.7259 | 10.0.14393.7259 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.6293 | 10.0.17763.6293 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.4780 | 10.0.19044.4780 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.4780 | 10.0.19045.4780 |
| microsoft | windows_11_21h2 | < 10.0.22000.3147 | 10.0.22000.3147 |
| microsoft | windows_11_22h2 | < 10.0.22621.4037 | 10.0.22621.4037 |
| microsoft | windows_11_23h2 | < 10.0.22631.4037 | 10.0.22631.4037 |
| microsoft | windows_11_24h2 | < 10.0.26100.1457 | 10.0.26100.1457 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.3197 | 10.0.22000.3197 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.4037 | 10.0.22621.4037 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.4037 | 10.0.22631.4037 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.4037 | 10.0.22631.4037 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.1457 | 10.0.26100.1457 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27277 | 6.1.7601.27277 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.22825 | 6.0.6003.22825 |
| microsoft | windows_server_2012 | < 6.2.9200.25031 | 6.2.9200.25031 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25031 | 6.2.9200.25031 |
Detection & IOCsextracted from sources · hover to see the quote
snort
alert ip any any -> $HOME_NET any (msg:"ET EXPLOIT Microsoft Windows Malformed IPv6 Destination Options Packet Inbound (CVE-2024-38063)"; flowbits:set,ET.CVE-2024-38063; ipv6.hdr; content:"|3c|"; offset:6; depth:1; content:"|00|"; distance:34; within:1; byte_test:1,>,0x80,0,relative; reference:cve,2024-38063; classtype:attempted-admin; sid:2055641; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_08_30, cve CVE_2024_38063, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Critical, updated_at 2024_08_30; target:dest_ip;)
snort
alert ip $HOME_NET any -> any any (msg:"ET EXPLOIT Possible Microsoft Windows IPv6 Fragmentation DoS (CVE-2024-38063)"; flowbits:isset,ET.CVE-2024-38063; content:"|60|"; depth:1; content:"|2c|"; distance:5; within:1; icmpv6.hdr; content:"|04 00|"; depth:2; reference:cve,2024-38063; classtype:denial-of-service; sid:2055644; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_08_30, cve CVE_2024_38063, deployment Perimeter, deployment Internal, confidence Low, signature_severity Critical, updated_at 2024_08_30; target:src_ip;)
bytes
|3c| at offset 6, depth 1 in IPv6 header (Next Header = Destination Options)
bytes
|04 00| at depth 2 in ICMPv6 header (ICMPv6 Parameter Problem response)
- →Detect inbound IPv6 packets with a Destination Options extension header (Next Header byte 0x3c at offset 6) containing a malformed PadN option (otype=0x81) — the vulnerability trigger packet. The Snort rule checks for Next Header 0x3c, a zero byte 34 bytes later, and an option type value > 0x80.
- →Detect ICMPv6 Parameter Problem (type 4, code 0) responses originating from internal hosts after the malformed Destination Options packet flowbit is set — indicates the target responded to the probe, confirming vulnerability.
- →The PoC exploit sends three-packet sequences per corruption iteration: (1) an IPv6 Destination Options packet with a bad PadN option, (2) an IPv6 Fragment header packet with m=1/offset=0 and payload 'notalive', and (3) a final fragment with m=0/offset=1. Monitor for this pattern of IPv6 fragment IDs starting with 0xbedead00. ↗
- →Vulnerability check: if the target responds with ICMPv6ParamProblem to the malformed Destination Options packet, the host is unpatched and exploitable. Monitor for ICMPv6 Parameter Problem messages from Windows hosts as a sign of active probing. ↗
- →The exploit sends packets in large batches (20 batches × 20 corruptions × 6 packets = 2400 packets). High-volume bursts of malformed IPv6 Destination Options and Fragment extension header packets to a single target are a strong behavioral indicator. ↗
- →The attack is zero-click and requires no authentication. Any Windows host with IPv6 enabled (default) is in scope. Prioritize detection at the network perimeter and on internal segments for inbound IPv6 Destination Options extension header traffic. ↗
- ·Disabling IPv6 on the target machine fully removes the attack surface, but Microsoft does not recommend this as IPv6 is a mandatory component of Windows Vista/Server 2008 and newer and disabling it may break Windows components. ↗
- ·IPv6 is enabled by default on virtually all modern Windows systems, making the attack surface extremely broad and the vulnerability potentially wormable. ↗
- ·The second Snort rule (sid:2055644) has confidence rated 'Low' by Emerging Threats, as it fires on ICMPv6 Parameter Problem responses from internal hosts — this may produce false positives in environments with other malformed IPv6 traffic.
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_msrc9.8CRITICAL
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Microsoft
Windows TCP/IP Remote Code Execution Vulnerability
vendor_msrc·2024-08-13·CVSS 9.8
CVE-2024-38063 [CRITICAL] CWE-191 Windows TCP/IP Remote Code Execution Vulnerability
Windows TCP/IP Remote Code Execution Vulnerability
FAQ: How could an attacker exploit this vulnerability?
An unauthenticated attacker could repeatedly send IPv6 packets, that include specially crafted packets, to a Windows machine which could enable remote code execution.
FAQ: Windows 11, version 24H2 is not generally available yet. Why are there updates for this version of Windows listed in the Security Updates table?
The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. Customers with these devices need to know about any vulnerabilities that affect their machine and to install the updates if they are not receiving automatic updates. Note that the general availability date for Windows 11, version 24H2 is scheduled for later this year.
Wi
GHSA
GHSA-vxmf-93xr-m54g: Windows TCP/IP Remote Code Execution Vulnerability
ghsa_unreviewed·2024-08-13
CVE-2024-38063 [CRITICAL] CWE-191 GHSA-vxmf-93xr-m54g: Windows TCP/IP Remote Code Execution Vulnerability
Windows TCP/IP Remote Code Execution Vulnerability
Suricata
ET EXPLOIT Microsoft Windows Malformed IPv6 Destination Options Packet Inbound (CVE-2024-38063)
suricata·2024-08-30·CVSS 9.8
CVE-2024-38063 [CRITICAL] ET EXPLOIT Microsoft Windows Malformed IPv6 Destination Options Packet Inbound (CVE-2024-38063)
ET EXPLOIT Microsoft Windows Malformed IPv6 Destination Options Packet Inbound (CVE-2024-38063)
Rule: alert ip any any -> $HOME_NET any (msg:"ET EXPLOIT Microsoft Windows Malformed IPv6 Destination Options Packet Inbound (CVE-2024-38063)"; flowbits:set,ET.CVE-2024-38063; ipv6.hdr; content:"|3c|"; offset:6; depth:1; content:"|00|"; distance:34; within:1; byte_test:1,>,0x80,0,relative; reference:cve,2024-38063; classtype:attempted-admin; sid:2055641; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_08_30, cve CVE_2024_38063, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Critical, updated_at 2024_08_30; target:dest_ip;)
Suricata
ET EXPLOIT Possible Microsoft Windows IPv6 Fragmentation DoS (CVE-2024-38063)
suricata·2024-08-30·CVSS 9.8
CVE-2024-38063 [CRITICAL] ET EXPLOIT Possible Microsoft Windows IPv6 Fragmentation DoS (CVE-2024-38063)
ET EXPLOIT Possible Microsoft Windows IPv6 Fragmentation DoS (CVE-2024-38063)
Rule: alert ip $HOME_NET any -> any any (msg:"ET EXPLOIT Possible Microsoft Windows IPv6 Fragmentation DoS (CVE-2024-38063)"; flowbits:isset,ET.CVE-2024-38063; content:"|60|"; depth:1; content:"|2c|"; distance:5; within:1; icmpv6.hdr; content:"|04 00|"; depth:2; reference:cve,2024-38063; classtype:denial-of-service; sid:2055644; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_08_30, cve CVE_2024_38063, deployment Perimeter, deployment Internal, confidence Low, signature_severity Critical, updated_at 2024_08_30; target:src_ip;)
Bleepingcomputer
Zero-click Windows TCP/IP RCE impacts all systems with IPv6 enabled, patch now
blogs_bleepingcomputer·2024-08-14·CVSS 9.8
[CRITICAL] Zero-click Windows TCP/IP RCE impacts all systems with IPv6 enabled, patch now
## Zero-click Windows TCP/IP RCE impacts all systems with IPv6 enabled, patch now
## Sergiu Gatlan
As Microsoft explained in its Tuesday advisory, unauthenticated attackers can exploit the flaw remotely in low-complexity attacks by repeatedly sending IPv6 packets that include specially crafted packets.
Microsoft also shared its exploitability assessment for this critical vulnerability, tagging it with an "exploitation more likely" label, which means that threat actors could create exploit code to "consistently exploit the flaw in attacks."
"Moreover, Microsoft is aware of past instances of this type of vulnerability being exploited. This would make it an attractive target for attackers, and therefore more likely that exploits could be created," Redmond explains .
"As such, customers w
Trendmicro
The August 2024 Security Update Review
blogs_trendmicro·2024-08-13·CVSS 6.7
[MEDIUM] The August 2024 Security Update Review
## The August 2024 Security Update Review
Get the August 2024 security update and review.
By: Dustin Childs 2024/08/13 Read time: ( words)
Save to Folio
I have successfully survived Summer Hacker Camp, and I hope you have too. And we return just in time for Patch Tuesday and a new crop of 0-days as Microsoft and Adobe have released their regularly scheduled updates. Take a break from your regular activities and join us as we review the details of their latest security alerts. If you’d rather watch the full video recap covering the entire release, you can check it out here:
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2024-38189
Microsoft Project Remote Code Execution Vulnerability
Important
8.8
No
Yes
RCE
CVE-2024-38178
Scripting Engine Memory Corruption Vulnerabil
Talos
Talos discovers Microsoft kernel mode driver vulnerabilities that could lead to SYSTEM privileges; Seven other critical issues disclosed
blogs_talos·2024-08-13·CVSS 6.7
[MEDIUM] Talos discovers Microsoft kernel mode driver vulnerabilities that could lead to SYSTEM privileges; Seven other critical issues disclosed
## Talos discovers Microsoft kernel mode driver vulnerabilities that could lead to SYSTEM privileges; Seven other critical issues disclosed
Microsoft disclosed six security vulnerabilities that are actively being exploited across its products as part of the company’s regular Patch Tuesday security update.
In all, August’s monthly round of patches from Microsoft included 87 vulnerabilities, seven of which are considered critical. In addition to the zero-days disclosed Tuesday, Microsoft also fixed a security issue that had already been publicly disclosed: CVE-2024-21302 , a vulnerability in Microsoft Office that could result in unauthorized disclosure of sensitive information to malicious actors. Microsoft initially warned about the possibility that attackers could exploit this vulnerabil
Qualys
Microsoft and Adobe Patch Tuesday, August 2024 Security Update Review
blogs_qualys·2024-08-13·CVSS 6.7
[MEDIUM] Microsoft and Adobe Patch Tuesday, August 2024 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for August 2024
Adobe Patches for August 2024
Zero-day Vulnerabilities Patched in August Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
Rapid Response with Patch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
Qualys Monthly Webinar Series
Microsoft’s August Patch Tuesday updates are out, and they address a range of vulnerabilities across multiple products. Let’s dive into the key updates and their implications.
## Microsoft Patch Tuesday for August 2024
Microsoft Patch’s Tuesday, August 202
Tenable
Microsoft’s August 2024 Patch Tuesday Addresses 88 CVEs
blogs_tenable·2024-08-13
Microsoft’s August 2024 Patch Tuesday Addresses 88 CVEs
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Qualys
Microsoft & Adobe August 2024 Patch Tuesday Updates | Qualys
blogs_qualys·2024-08-13·CVSS 6.7
[MEDIUM] Microsoft & Adobe August 2024 Patch Tuesday Updates | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for August 2024
- Adobe Patches for August 2024
- Zero-day Vulnerabilities Patched in August Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response with Patch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- Qualys Monthly Webinar Series
Microsoft’s August Patch Tuesday updates are out, and they address a range of vulnerabilities across multiple products. Let’s dive into the key updates and their implications.
## Microsoft Patch Tuesday for August 2024
Microsoft Patch’s Tuesda
Bleepingcomputer
Microsoft August 2024 Patch Tuesday fixes 9 zero-days, 6 exploited
blogs_bleepingcomputer·2024-08-13·CVSS 7.5
[HIGH] Microsoft August 2024 Patch Tuesday fixes 9 zero-days, 6 exploited
## Microsoft August 2024 Patch Tuesday fixes 9 zero-days, 6 exploited
## Lawrence Abrams
36 Elevation of Privilege Vulnerabilities
4 Security Feature Bypass Vulnerabilities
28 Remote Code Execution Vulnerabilities
8 Information Disclosure Vulnerabilities
6 Denial of Service Vulnerabilities
7 Spoofing Vulnerabilities
The number of bugs listed above do not include Microsoft Edge flaws that were disclosed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the new Windows 11 KB5041585 update and Windows 10 KB5041580 update .
## Ten zero-days disclosed
This month's Patch Tuesday fixes six actively exploited and three other publicly disclosed zero-day vulnerabilities. Another publicly disclosed zero-day remains unf
Talos
Talos discovers Microsoft kernel mode driver vulnerabilities that could lead to SYSTEM privileges; Seven other critical issues disclosed
blogs_talos·2024-08-13·CVSS 6.7
CVE-2024-21302 [MEDIUM] Talos discovers Microsoft kernel mode driver vulnerabilities that could lead to SYSTEM privileges; Seven other critical issues disclosed
Microsoft disclosed six security vulnerabilities that are actively being exploited across its products as part of the company’s regular Patch Tuesday security update.
In all, August’s monthly round of patches from Microsoft included 87 vulnerabilities, seven of which are considered critical. In addition to the zero-days disclosed Tuesday, Microsoft also fixed a security issue that had already been publicly disclosed: CVE-2024-21302, a vulnerability in Microsoft Office that could result in unauthorized disclosure of sensitive information to malicious actors. Microsoft initially warned about the possibility that attackers could exploit this vulnerability in the wild last week, including being able to reverse older software patches that could re-open them to past vulnerabilities.
Cisco Talo
Trendmicro
The August 2024 Security Update Review
blogs_trendmicro·2024-08-13
The August 2024 Security Update Review
# The August 2024 Security Update Review
Get the August 2024 security update and review.
By: Dustin Childs
2024/08/13
Read time: ( words)
Save to Folio
I have successfully survived Summer Hacker Camp, and I hope you have too. And we return just in time for Patch Tuesday and a new crop of 0-days as Microsoft and Adobe have released their regularly scheduled updates. Take a break from your regular activities and join us as we review the details of their latest security alerts. If you’d rather watch the full video recap covering the entire release, you can check it out here:
Adobe Patches for August 2024
For August, Adobe released 11 security bulletins addressing 71 CVEs in Adobe Illustrator. Dimension, Photoshop, InDesign, Acrobat and Reader, Bridge, Substance 3D Stager, Commerce, InC
Crowdstrike
August 2024 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] August 2024 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
Crowdstrike
August 2024 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] August 2024 Patch Tuesday: Updates and Analysis
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
2024-08-13
Published