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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":June 20, 2026, 6 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
Search
3141 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Office Long Term Servicing Channel (LTSC) 		Microsoft Office のリモート コードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40358 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3142 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40359 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3143 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel の情報漏えいの脆弱性 CWE-125
境界外読み取り 		CVE-2026-40360 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3144 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40361 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3145 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel のリモートでコードが実行される脆弱性 CWE-122
ヒープオーバーフロー 		CVE-2026-40362 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3146 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Office Long Term Servicing Channel (LTSC) 		Microsoft Office のリモート コードが実行される脆弱性 CWE-122
ヒープオーバーフロー 		CVE-2026-40363 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3147 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-122
CWE-843
CWE-908
CVE-2026-40364 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3148 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40366 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3149 8.4 重要
Local 		マイクロソフト Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps
Microsoft SharePoint Server
Microsoft Word 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-822
信頼性のないポインタデリファレンス 		CVE-2026-40367 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
3150 7.8 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Office Long Term Servicing Channel (LTSC) 		Microsoft Office クイック実行の特権の昇格の脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40418 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:June 20, 2026, 4:01 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
Search
41 8.1 HIGH
Network 		- - Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume t… CWE-120
Classic Buffer Overflow 		CVE-2026-12328 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
42 7.3 HIGH
Network 		- - Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effo… CWE-119
Incorrect Access of Indexable Resource ('Range Error')  		CVE-2026-12327 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
43 7.3 HIGH
Network 		- - Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited t… CWE-119
Incorrect Access of Indexable Resource ('Range Error')  		CVE-2026-12326 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
44 6.5 MEDIUM
Network 		- - Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12. CWE-400
 Uncontrolled Resource Consumption 		CVE-2026-12325 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
45 7.3 HIGH
Network 		- - Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12. CWE-703
 Improper Check or Handling of Exceptional Conditions 		CVE-2026-12324 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
46 5.4 MEDIUM
Network 		- - Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. CWE-1021
 Improper Restriction of Rendered UI Layers or Frames 		CVE-2026-12323 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
47 5.4 MEDIUM
Network 		- - Clickjacking issue in the Widget: Gtk component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. CWE-1021
 Improper Restriction of Rendered UI Layers or Frames 		CVE-2026-12322 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
48 5.4 MEDIUM
Network 		- - JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. CWE-670
 Always-Incorrect Control Flow Implementation 		CVE-2026-12321 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
49 4.3 MEDIUM
Network 		- - Information disclosure in the Password Manager component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. CWE-200
Information Exposure 		CVE-2026-12320 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm
50 6.5 MEDIUM
Network 		- - Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152. CWE-400
 Uncontrolled Resource Consumption 		CVE-2026-12319 2026-06-17 02:16 2026-06-16 Show GitHub Exploit DB Packet Storm