CVE:CVE-2021-31894
CNNVD:CNNVD-202107-700
Siemens SIMATIC PCS 7是德国西门子（Siemens）公司的一套过程控制系统。
Siemens SIMATIC PCS 7存在安全漏洞，该漏洞可能允许攻击者更改某些元文件的内容。以下产品和版本受到影响：SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions), SIMATIC PDM (All versions), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions)。
solution:Upgrade siemens simatic_pcs_7_firmware to a higher version than 8.2,9.0,and avoid the version (,8.2],9.0; Upgrade siemens simatic_pdm_firmware to a higher version than -; Upgrade siemens simatic_step_7_firmware to a higher version than 5.7,and avoid the version [5.0,5.7); Upgrade siemens sinamics_starter_firmware to a higher version than 5.4,5.4,5.4:hf1,5.4:hf2,5.4:sp1,5.4:sp1_hf1,5.4:sp2,and avoid the version (,5.4),5.4,5.4:hf1,5.4:hf2,5.4:sp1,5.4:sp1_hf1,5.4:sp2