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You can search for vulnerabilities managed by JVN (Japan Vulnerability Note) and NVD (National Vulnerability Database).
Search keywords must be entered in English otherwise will not be searched in both JVN and NVD.

To search by CWE, please refer to the CWE Overview and check the CWE number.

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JVN Vulnerability Information

Update Date":May 21, 2026, 6:01 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
Search
4371 7 重要
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 10 1607
Microsoft Windows Server 2016
Microsoft Windows 11 23h2
Microsoft … 		WinSock 用 Windows Ancillary Function Driver の特権の昇格の脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-27922 2026-04-24 11:32 2026-04-14 Show GitHub Exploit DB Packet Storm
4372 7.8 重要
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 10 1607
Microsoft Windows Server 2016
Microsoft Windows 11 23h2
Microsoft … 		デスクトップ ウィンドウ マネージャーの特権昇格の脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-27923 2026-04-24 11:32 2026-04-14 Show GitHub Exploit DB Packet Storm
4373 7.8 重要
Local 		マイクロソフト Microsoft Windows Server 2022
Microsoft Windows 11 23h2
Microsoft Windows 10 22h2
Microsoft Windows 10 21h2 		デスクトップ ウィンドウ マネージャーの特権昇格の脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-27924 2026-04-24 11:32 2026-04-14 Show GitHub Exploit DB Packet Storm
4374 6.5 警告
Adjacent 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 10 1607
Microsoft Windows Server 2016
Microsoft Windows 11 23h2
Microsoft … 		Windows UPnP デバイス ホスティングの情報漏えいの脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-27925 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4375 7 重要
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 11 23h2
Microsoft Windows 11 26h1
Microsoft Windows 10 1809
Microsoft Wind… 		Windows Cloud Files Mini Filter ドライバーの特権の昇格の脆弱性 CWE-362
CWE-416
CVE-2026-27926 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4376 7 重要
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 11 23h2
Microsoft Windows 11 26h1
Microsoft Windows 10 1809
Microsoft Wind… 		Windows Projected File System の特権の昇格の脆弱性 CWE-362
CWE-416
CVE-2026-27927 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4377 8.7 重要
Network 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 2025
Microsoft Windows Server 2016 		Windows Hello のセキュリティ機能のバイパスの脆弱性 CWE-20
不適切な入力確認 		CVE-2026-27928 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4378 7 重要
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 10 1607
Microsoft Windows Server 2016
Microsoft Windows 11 23h2
Microsoft … 		Windows LUA ファイル仮想化フィルター ドライバーの特権昇格の脆弱性 CWE-367
Time-of-check Time-of-use (TOCTOU) 競合状態 		CVE-2026-27929 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4379 5.5 警告
Local 		マイクロソフト Microsoft Windows Server 2019
Microsoft Windows 10 1607
Microsoft Windows Server 2016
Microsoft Windows 11 23h2
Microsoft … 		Windows GDI の情報漏えいの脆弱性 CWE-125
境界外読み取り 		CVE-2026-27930 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
4380 5.5 警告
Local 		マイクロソフト Microsoft Windows 11 23h2
Microsoft Windows 11 26h1
Microsoft Windows 10 22h2
Microsoft Windows 10 21h2
Microsoft Windows&… 		Windows GDI の情報漏えいの脆弱性 CWE-125
境界外読み取り 		CVE-2026-27931 2026-04-24 11:31 2026-04-14 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:May 22, 2026, 4:08 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
Search
341 9.3 CRITICAL
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-346
 Origin Validation Error 		CVE-2026-8950 2026-05-21 00:00 2026-05-19 Show GitHub Exploit DB Packet Storm
342 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-290
 Authentication Bypass by Spoofing 		CVE-2026-8963 2026-05-20 23:57 2026-05-19 Show GitHub Exploit DB Packet Storm
343 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-451
 User Interface (UI) Misrepresentation of Critical Information 		CVE-2026-8964 2026-05-20 23:57 2026-05-19 Show GitHub Exploit DB Packet Storm
344 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-400
 Uncontrolled Resource Consumption 		CVE-2026-8968 2026-05-20 23:56 2026-05-19 Show GitHub Exploit DB Packet Storm
345 8.1 HIGH
Network 		mozilla firefox
thunderbird 		Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-693
 Protection Mechanism Failure 		CVE-2026-8969 2026-05-20 23:55 2026-05-19 Show GitHub Exploit DB Packet Storm
346 9.1 CRITICAL
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-942
 Permissive Cross-domain Policy with Untrusted Domains 		CVE-2026-8948 2026-05-20 23:53 2026-05-19 Show GitHub Exploit DB Packet Storm
347 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-190
 Integer Overflow or Wraparound 		CVE-2026-8949 2026-05-20 23:49 2026-05-19 Show GitHub Exploit DB Packet Storm
348 6.5 MEDIUM
Network 		mozilla firefox Spoofing issue in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151. New CWE-290
 Authentication Bypass by Spoofing 		CVE-2026-8951 2026-05-20 23:48 2026-05-19 Show GitHub Exploit DB Packet Storm
349 6.5 MEDIUM
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-346
 Origin Validation Error 		CVE-2026-8971 2026-05-20 23:41 2026-05-19 Show GitHub Exploit DB Packet Storm
350 9.8 CRITICAL
Network 		mozilla firefox
thunderbird 		Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-190
 Integer Overflow or Wraparound 		CVE-2026-8956 2026-05-20 23:31 2026-05-19 Show GitHub Exploit DB Packet Storm