{"id":"CVE-2021-26828","aliases":["EUVD-2021-13613","GHSA-j87g-5g8x-jjxc"],"status":"published","title":"OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated...","description":"OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.39096,"percentile":0.98614,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2021-06-11T11:10:58Z","modified":"2026-06-17T03:43:49Z","kev":{"date_added":"2025-12-03","due_date":"2025-12-24","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2025-12-03"},{"source":"kev","since":"2025-12-03"}],"exploits":[{"source":"pocgithub","id":"hev0x/CVE-2021-26828_ScadaBR_RCE","title":"hev0x/CVE-2021-26828_ScadaBR_RCE","date":"2021-03-31","url":"https://github.com/hev0x/CVE-2021-26828_ScadaBR_RCE"},{"source":"pocgithub","id":"ridpath/CVE-2021-26828-Ultimate","title":"ridpath/CVE-2021-26828-Ultimate","date":"2025-05-30","url":"https://github.com/ridpath/CVE-2021-26828-Ultimate"},{"source":"pocgithub","id":"h002733/CVE-2021-26828","title":"h002733/CVE-2021-26828","date":"2026-10-09","url":"https://github.com/h002733/CVE-2021-26828"}],"products":[{"vendor":"openplc","product":"scadabr"},{"vendor":"scadabr","product":"scadabr"}],"references":[{"url":"https://youtu.be/k1teIStQr1A","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/162564/ScadaBR-1.0-1.1CE-Linux-Shell-Upload.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://forum.scadabr.com.br/t/report-falhas-de-seguranca-em-versoes-do-scadabr/3615/4","tags":["x_refsource_MISC","x_transferred","Broken Link","Exploit","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26828","tags":["government-resource","US Government Resource"]},{"url":"https://github.com/SCADA-LTS/Scada-LTS/pull/2174","tags":["issue-tracking","Issue Tracking","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26828"},{"url":"https://github.com/advisories/GHSA-j87g-5g8x-jjxc"}],"sources":{"cve":[{"id":"CVE-2021-26828","description":"OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via 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unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2021-26828","description":"OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.","status":"published","published":"2021-06-11T12:15:12.017Z","modified":"2026-06-17T03:43:49.877Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}