CVE:CVE-2021-21057
CNNVD:CNNVD-202102-754
Adobe Acrobat Reader是美国奥多比（Adobe）公司的一款PDF查看器。该软件用于打印，签名和注释 PDF。
Acrobat Reader DC 中存在代码问题漏洞，该漏洞源于解析PDF文件时会导致空指针应用，未经验证的攻击者可以利用此漏洞在当前用户的上下文中实现拒绝服务。以下产品及型号会受到影响：2020.013.20074 和之前版本, 2020.001.30018和之前版本， 2017.011.30188和之前版本。
solution:Upgrade adobe acrobat to a higher version than 17.011.30188,20.001.30018,and avoid the version [17.0,17.011.30188],[20.0,20.001.30018]; Upgrade adobe acrobat_dc to a higher version than 20.013.20074,and avoid the version (,20.013.20074]; Upgrade adobe acrobat_reader to a higher version than 17.011.30188,20.001.300183,and avoid the version [17.0,17.011.30188],[20.0,20.001.300183]; Upgrade adobe acrobat_reader_dc to a higher version than 20.013.20074,and avoid the version (,20.013.20074]