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You can search for vulnerabilities managed by JVN (Japan Vulnerability Note) and NVD (National Vulnerability Database).
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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 3, 2026, 6 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
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PoC
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254021 10 危険 アップル
VMware
サン・マイクロシステムズ		 - Sun Java SE の Provider クラスにおける詳細不明な脆弱性 CWE-noinfo
情報不足 		CVE-2009-2723 2010-01-4 14:55 2009-08-10 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:May 4, 2026, 4:06 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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3801 6.5 MEDIUM
Network 		saitoha libsixel A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file in… CWE-787
 Out-of-bounds Write 		CVE-2020-21677 2026-04-24 21:56 2021-08-11 Show GitHub Exploit DB Packet Storm
3802 6.5 MEDIUM
Network 		saitoha libsixel Un desbordamiento de búfer en la región heap de la memoria en la función sixel_encoder_output_without_macro en el archivo encoder.c de Libsixel versión 1.8.4, permite a atacantes causar una denegaci… CWE-787
 Out-of-bounds Write 		CVE-2020-21677 2026-04-24 21:56 2021-08-11 Show GitHub Exploit DB Packet Storm
3803 6.5 MEDIUM
Network 		saitoha libsixel An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file. NVD-CWE-noinfo
CVE-2020-21048 2026-04-24 21:56 2021-09-15 Show GitHub Exploit DB Packet Storm
3804 6.5 MEDIUM
Network 		saitoha libsixel Un problema en el componente dither.c de libsixel versiones anteriores a v1.8.4, permite a atacantes causar una denegación de servicio (DOS) por medio de un archivo PNG diseñado NVD-CWE-noinfo
CVE-2020-21048 2026-04-24 21:56 2021-09-15 Show GitHub Exploit DB Packet Storm
3805 6.5 MEDIUM
Network 		saitoha libsixel Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c. CWE-787
 Out-of-bounds Write 		CVE-2020-21050 2026-04-24 21:56 2021-09-15 Show GitHub Exploit DB Packet Storm
3806 6.5 MEDIUM
Network 		saitoha libsixel Libsixel versiones anteriores a v1.8.3, contiene un desbordamiento del buffer de pila en la función gif_process_raster en el archivo fromgif.c CWE-787
 Out-of-bounds Write 		CVE-2020-21050 2026-04-24 21:56 2021-09-15 Show GitHub Exploit DB Packet Storm
3807 8.8 HIGH
Network 		saitoha libsixel Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c. CWE-787
 Out-of-bounds Write 		CVE-2020-21547 2026-04-24 21:56 2021-09-18 Show GitHub Exploit DB Packet Storm
3808 8.8 HIGH
Network 		saitoha libsixel Libsixel versión 1.8.2, contiene un desbordamiento de búfer en la región heap de la memoria en la función dither_func_fs en el archivo tosixel.c CWE-787
 Out-of-bounds Write 		CVE-2020-21547 2026-04-24 21:56 2021-09-18 Show GitHub Exploit DB Packet Storm
3809 8.8 HIGH
Network 		saitoha libsixel Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c. CWE-787
 Out-of-bounds Write 		CVE-2020-21548 2026-04-24 21:56 2021-09-18 Show GitHub Exploit DB Packet Storm
3810 8.8 HIGH
Network 		saitoha libsixel Libsixel versión 1.8.3, contiene un desbordamiento de búfer en la región heap de la memoria en la función sixel_encode_highcolor en el archivo tosixel.c CWE-787
 Out-of-bounds Write 		CVE-2020-21548 2026-04-24 21:56 2021-09-18 Show GitHub Exploit DB Packet Storm