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Windows Rich Text Edit Elevation of Privilege Vulnerability

🗓️ 12 May 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 10 Views

A double free in Windows Rich Text Edit enables an authorized attacker to locally elevate privileges.

Related
Detection
ReporterTitlePublishedViews
Family
BDU FSTEC		The vulnerability of the Rich Text Edit Control text editor in Windows operating systems, which allows attackers to exploit their privileges.
14 May 202600:00
–bdu_fstec
Circl		CVE-2026-21530
12 May 202615:52
–circl
CNNVD		Microsoft Rich Text Edit Control 资源管理错误漏洞
12 May 202600:00
–cnnvd
CVE		CVE-2026-21530
12 May 202616:58
–cve
Cvelist		CVE-2026-21530 Windows Rich Text Edit Elevation of Privilege Vulnerability
12 May 202616:58
–cvelist
EUVD		EUVD-2026-29547
12 May 202618:30
–euvd
Microsoft KB		Description of the security update for Office 2016: June 9, 2023 (KB5002578)
12 May 202614:00
–mskb
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
Rows per page
Vulners
Node
microsoftoffice_2016Range<16.0.5556.1000x64
OR
microsoftoffice_2016Range<16.0.5556.1000x86
OR
microsoftoffice_2024Range<16.0.17932.20776ltscx64
OR
microsoftoffice_2024Range<16.0.17932.20776ltscx32
OR
microsoftoffice_2021Range<16.0.14334.20670ltscx32
OR
microsoftoffice_2021Range<16.0.14334.20670ltscx64
OR
microsoft365_appsRange<16.0.19929.20164current_channelenterprisex64
OR
microsoft365_appsRange<16.0.19929.20162monthly_enterprise_channelenterprisex64
OR
microsoft365_appsRange<16.0.19822.20240monthly_enterprise_channelenterprisex64
OR
microsoft365_appsRange<16.0.19725.20320monthly_enterprise_channelenterprisex64
OR
microsoft365_appsRange<16.0.19127.20646semi-annual_enterprise_channelenterprisex64
OR
microsoft365_appsRange<16.0.19929.20164current_channelenterprisex32
OR
microsoft365_appsRange<16.0.19929.20162monthly_enterprise_channelenterprisex32
OR
microsoft365_appsRange<16.0.19822.20240monthly_enterprise_channelenterprisex32
OR
microsoft365_appsRange<16.0.19725.20320monthly_enterprise_channelenterprisex32
OR
microsoft365_appsRange<16.0.19127.20646semi-annual_enterprise_channelenterprisex32
OR
microsoftoffice_2019Range<16.0.10417.20132x64
OR
microsoftoffice_2019Range<16.0.10417.20132x32
OR
microsoftwindows_server_2012_r2Range<6.3.9600.23181x64
OR
microsoftwindows_server_2012_r2Range<6.3.9600.23181x64
OR
microsoftwindows_server_2012Range<6.2.9200.26079x64
OR
microsoftwindows_server_2012Range<6.2.9200.26079x64
OR
microsoftwindows_server_2016Range<10.0.14393.9140
OR
microsoftwindows_server_2016Range<10.0.14393.9140
OR
microsoftwindows_10_1607Range<10.0.14393.9140x64
OR
microsoftwindows_10_1607Range<10.0.14393.9140x86
OR
microsoftwindows_11_26h1Range<10.0.28000.2113x64
OR
microsoftwindows_11_26h1Range<10.0.28000.2113x64
OR
microsoftwindows_server_2025Range<10.0.26100.32860
OR
microsoftwindows_server_2025Range<10.0.26100.32772
OR
microsoftwindows_11_24h2Range<10.0.26100.8457x64
OR
microsoftwindows_11_24h2Range<10.0.26100.8390x64
OR
microsoftwindows_11_24h2Range<10.0.26100.8457x64
OR
microsoftwindows_11_24h2Range<10.0.26100.8390x64
OR
microsoftwindows_server_23h2Range<10.0.25398.2330
OR
microsoftwindows_11_23h2Range<10.0.22631.7219x64
OR
microsoftwindows_11_23h2Range<10.0.22631.7079x64
OR
microsoftwindows_11_25h2Range<10.0.26200.8457x64
OR
microsoftwindows_11_25h2Range<10.0.26200.8390x64
OR
microsoftwindows_11_25h2Range<10.0.26200.8457x64
OR
microsoftwindows_11_25h2Range<10.0.26200.8390x64
OR
microsoftwindows_server_2025Range<10.0.26100.32860
OR
microsoftwindows_server_2025Range<10.0.26100.32772
OR
microsoftwindows_10_22h2Range<10.0.19045.7417x86
OR
microsoftwindows_10_22h2Range<10.0.19045.7417x64
OR
microsoftwindows_10_22h2Range<10.0.19045.7417x64
OR
microsoftwindows_10_21h2Range<10.0.19044.7291x64
OR
microsoftwindows_10_21h2Range<10.0.19044.7291x64
OR
microsoftwindows_10_21h2Range<10.0.19044.7291x86
OR
microsoftwindows_server_2022Range<10.0.20348.5139
OR
microsoftwindows_server_2022Range<10.0.20348.5074
OR
microsoftwindows_server_2022Range<10.0.20348.5139
OR
microsoftwindows_server_2022Range<10.0.20348.5074
OR
microsoftwindows_server_2019Range<10.0.17763.8755
OR
microsoftwindows_server_2019Range<10.0.17763.8755
OR
microsoftwindows_10_1809Range<10.0.17763.8755x64
OR
microsoftwindows_10_1809Range<10.0.17763.8755x86

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09 Jun 2026 14:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.7
EPSS0.00319
SSVC
Windows Rich Text EditElevation of PrivilegeDouble FreeLocal Privilege Escalation
10