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The vulnerability of the TCP/IP protocol implementation in Windows operating systems allows a perpetrator to cause service failures.

🗓️ 13 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 1 Views

Windows network protocol flaw from pointer aliasing lets attackers cause service interruptions.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-40413
12 May 202616:59
–attackerkb
Circl		CVE-2026-40413
12 May 202615:52
–circl
CNNVD		Microsoft Windows TCP/IP 代码问题漏洞
12 May 202600:00
–cnnvd
CVE		CVE-2026-40413
12 May 202616:59
–cve
Cvelist		CVE-2026-40413 Windows TCP/IP Denial of Service Vulnerability
12 May 202616:59
–cvelist
EUVD		EUVD-2026-29670
12 May 202618:30
–euvd
Microsoft KB		May 12, 2026—KB5087420 (OS Build 22631.7079)
12 May 202614:00
–mskb
Microsoft KB		May 12, 2026—Hotpatch KB5087423 (OS Build 26100.32772)
9 Jun 202614:00
–mskb
Microsoft KB		May 12, 2026—Hotpatch KB5087424 (OS Build 20348.5074)
12 May 202614:00
–mskb
Microsoft KB		May 12, 2026—KB5087470 (Monthly Rollup)
12 May 202614:00
–mskb
Rows per page
Vulners
Node
microsoftwindows_server_2012_r2_(server_core_installation)Range<6.3.9600.23181
OR
microsoftwindows_server_2012_r2Range<6.3.9600.23181
OR
microsoftwindows_server_2016_(server_core_installation)Range<10.0.14393.9140
OR
microsoftwindows_server_2016Range<10.0.14393.9140
OR
microsoftwindows_10_1607Range<10.0.14393.9140
OR
microsoftwindows_11_26h1Range<10.0.28000.2113
OR
microsoftwindows_server_2025Range<10.0.26100.32860
OR
microsoftwindows_server_2025Range<10.0.26100.32772
OR
microsoftwindows_11_24h2Range<10.0.26100.8457
OR
microsoftwindows_11_24h2Range<10.0.26100.8390
OR
microsoftwindows_server_2022,_23h2_edition_(server_core_installation)Range<10.0.25398.2330
OR
microsoftwindows_11_23h2Range<10.0.22631.7079
OR
microsoftwindows_11_25h2Range<10.0.26200.8457
OR
microsoftwindows_11_25h2Range<10.0.26200.8390
OR
microsoftwindows_server_2025_(server_core_installation)Range<10.0.26100.32860
OR
microsoftwindows_server_2025_(server_core_installation)Range<10.0.26100.32772
OR
microsoftwindows_10_22h2Range<10.0.19045.7291
OR
microsoftwindows_10_21h2Range<10.0.19044.7291
OR
microsoftwindows_server_2022_(server_core_installation)Range<10.0.20348.5139
OR
microsoftwindows_server_2022_(server_core_installation)Range<10.0.20348.5074
OR
microsoftwindows_server_2022Range<10.0.20348.5139
OR
microsoftwindows_server_2022Range<10.0.20348.5074
OR
microsoftwindows_server_2019_(server_core_installation)Range<10.0.17763.8755
OR
microsoftwindows_server_2019Range<10.0.17763.8755
OR
microsoftwindows_10_1809Range<10.0.17763.8755
OR
microsoftwindows_server_2012Range<6.2.9200.26079
OR
microsoftwindows_server_2012_(server_core_installation)Range<6.2.9200.26079

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13 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 26.1
CVSS 37.4
EPSS0.00401
Windowsnetwork protocolpointer aliasingremote attackersservice interruptions
1