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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 1, 2026, 6 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
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248811 5 警告 Opera Software ASA - Opera におけるサービス運用妨害 (アプリケーションクラッシュ) の脆弱性 CWE-Other
その他 		CVE-2012-3565 2012-06-18 16:09 2012-04-26 Show GitHub Exploit DB Packet Storm
248812 5 警告 Opera Software ASA - Opera におけるサービス運用妨害 (アプリケーションハング) の脆弱性 CWE-noinfo
情報不足 		CVE-2012-3564 2012-06-18 15:42 2012-04-26 Show GitHub Exploit DB Packet Storm
248813 5 警告 Opera Software ASA - Opera におけるサービス運用妨害 (アプリケーションクラッシュ) の脆弱性 CWE-Other
その他 		CVE-2012-3563 2012-06-18 15:36 2012-04-26 Show GitHub Exploit DB Packet Storm
248814 4.3 警告 Opera Software ASA - Opera におけるサービス運用妨害 (アプリケーションクラッシュ) の脆弱性 CWE-Other
その他 		CVE-2012-3562 2012-06-18 15:35 2012-04-26 Show GitHub Exploit DB Packet Storm
248815 10 危険 Opera Software ASA - Opera における任意のコードを実行される脆弱性 CWE-119
バッファエラー 		CVE-2012-3561 2012-06-18 15:33 2012-06-14 Show GitHub Exploit DB Packet Storm
248816 4.3 警告 Opera Software ASA - Opera におけるなりすまし攻撃を実行される脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2012-3560 2012-06-18 15:30 2012-06-14 Show GitHub Exploit DB Packet Storm
248817 10 危険 Opera Software ASA - Mac OS X 上で稼働する Opera における脆弱性 CWE-noinfo
情報不足 		CVE-2012-3559 2012-06-18 15:04 2012-06-14 Show GitHub Exploit DB Packet Storm
248818 2.6 注意 Opera Software ASA - Opera におけるなりすまし攻撃を受ける脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2012-3558 2012-06-18 14:43 2012-06-14 Show GitHub Exploit DB Packet Storm
248819 5 警告 Opera Software ASA - Opera における重要な情報を取得される脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2012-3557 2012-06-18 14:25 2012-06-14 Show GitHub Exploit DB Packet Storm
248820 9.3 危険 Opera Software ASA - Opera におけるクロスサイトスクリプティングの脆弱性 CWE-20
不適切な入力確認 		CVE-2012-3556 2012-06-18 14:22 2012-06-14 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:June 1, 2026, 4:12 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
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210471 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_handles ../../src/decode.c:2637. CWE-787
 Out-of-bounds Write 		CVE-2020-21831 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210472 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_read_B ../../src/bits.c:135. CWE-787
 Out-of-bounds Write 		CVE-2020-21841 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210473 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985. CWE-787
 Out-of-bounds Write 		CVE-2020-21840 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210474 6.5 MEDIUM
Network 		gnu libredwg An issue was discovered in GNU LibreDWG 0.10. Crafted input will lead to an memory leak in dwg_decode_eed ../../src/decode.c:3638. CWE-401
 Missing Release of Memory after Effective Lifetime 		CVE-2020-21839 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210475 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_appinfo ../../src/decode.c:2842. CWE-787
 Out-of-bounds Write 		CVE-2020-21838 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210476 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_preview ../../src/decode.c:3175. CWE-787
 Out-of-bounds Write 		CVE-2020-21836 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210477 6.5 MEDIUM
Network 		gnu libredwg A null pointer deference issue exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2337. CWE-476
 NULL Pointer Dereference 		CVE-2020-21835 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210478 6.5 MEDIUM
Network 		gnu libredwg A null pointer deference issue exists in GNU LibreDWG 0.10 via get_bmp ../../programs/dwgbmp.c:164. CWE-476
 NULL Pointer Dereference 		CVE-2020-21834 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210479 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_classes ../../src/decode.c:2440. CWE-787
 Out-of-bounds Write 		CVE-2020-21833 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm
210480 8.8 HIGH
Network 		gnu libredwg A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2417. CWE-787
 Out-of-bounds Write 		CVE-2020-21832 2024-11-21 14:12 2021-05-18 Show GitHub Exploit DB Packet Storm