Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 14 products
| Date | Total | Labels |
|---|
| 2026-05-12 | 1 | Patch1 |
| 2026-05-15 | 1 | Disclosure1 |
| 2026-06-10 | 1 | Disclosure1 |
#windowsupdate #microsoft ■ 既存の脆弱性情報の更新 既存のマイクロソフトの脆弱性 7 件を更新 ・CVE-2025-21330 Windows リモート デスクトップ サービスのサービス拒否の脆弱性 ・CVE-2026-21530 Windows リッチ テキスト エディットの特権昇格の脆弱性 つづく…
Post summary
The post announces an update to Microsoft vulnerability information, listing CVE‑2025‑21330 as a service denial flaw and CVE‑2026‑21530 as a privilege escalation vulnerability without providing exploits, patches, or active‑use evidence.
CVE-2026-21530 | Microsoft Windows up to Server 2025 Rich Text Edit double free (WID-SEC-2026-1489) https://ift.tt/zNUvMiP A vulnerability classified as problematic has been found in Microsoft Windows. The impacted element is an unknown function of the component Rich Text Edit…
Post summary
A double‑free vulnerability (CVE‑2026‑21530) in Windows’ Rich Text Edit component has been reported, but no PoC, exploit code, active exploitation, or patch information is provided.
🚨 CVE-2026-21530 in Windows Rich Text Edit = obscure entry point, familiar workflow. One local EoP later, that “harmless” doc just became admin’s snack. Patch fast. #Windows #Security https://windowsforum.com/threads/cve-2026-21530-patch-may-2026-windows-rich-text-edit-eop-privilege-escalation.417699/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PrivilegeEscalation #WindowsSecurityUpdate #Cve202621530 #RichTextEdit https://t.co/wmLmRNjsXh
Post summary
The tweet highlights CVE‑2026‑21530, a local privilege‑escalation flaw in Windows Rich Text Edit, and urges users to apply patches swiftly.
25 of 25 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | microsoft | windows_10_1607 | - | - | x64 |
| OS | microsoft | windows_10_1607 | - | - | x86 |
| OS | microsoft | windows_10_1809 | - | - | x64 |
| OS | microsoft | windows_10_1809 | - | - | x86 |
| OS | microsoft | windows_10_21h2 | - | - | arm64 |
| OS | microsoft | windows_10_21h2 | - | - | x64 |
| OS | microsoft | windows_10_21h2 | - | - | x86 |
| OS | microsoft | windows_10_22h2 | - | - | arm64 |
| OS | microsoft | windows_10_22h2 | - | - | x64 |
| OS | microsoft | windows_10_22h2 | - | - | x86 |
| OS | microsoft | windows_11_23h2 | - | - | arm64 |
| OS | microsoft | windows_11_23h2 | - | - | x64 |
| OS | microsoft | windows_11_24h2 | - | - | arm64 |
| OS | microsoft | windows_11_24h2 | - | - | x64 |
| OS | microsoft | windows_11_25h2 | - | - | arm64 |
| OS | microsoft | windows_11_25h2 | - | - | x64 |
| OS | microsoft | windows_11_26h1 | - | - | arm64 |
| OS | microsoft | windows_11_26h1 | - | - | x64 |
| OS | microsoft | windows_server_2012 | - | - | - |
| OS | microsoft | windows_server_2012 | r2 | - | - |
| OS | microsoft | windows_server_2016 | - | - | - |
| OS | microsoft | windows_server_2019 | - | - | - |
| OS | microsoft | windows_server_2022 | - | - | - |
| OS | microsoft | windows_server_2022_23h2 | - | - | - |
| OS | microsoft | windows_server_2025 | - | - | - |