{"id":"CVE-2026-26335","aliases":["EUVD-2026-7363","GHSA-pw8j-97jq-cw6g"],"status":"published","title":"Calero VeraSMART \u003c 2022 R1 Static IIS Machine Keys Enable ViewState RCE","description":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\\\Program Files (x86)\\\\Veramark\\\\VeraSMART\\\\WebRoot\\\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.02952,"percentile":0.87352,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-321"],"published":"2026-02-13T20:51:26Z","modified":"2026-07-14T15:54:07Z","exploits":[{"source":"exploitdb","id":"EDB-52540","title":"Repetier-Server 1.4.10 - Path Traversal","type":"webapps","platform":"multiple","date":"2026-04-30","url":"https://www.exploit-db.com/exploits/52540"},{"source":"pocgithub","id":"mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE","title":"mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE","date":"2026-02-14","url":"https://github.com/mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCE"}],"products":[{"vendor":"calero","product":"verasmart"}],"references":[{"url":"https://www.calero.com/","tags":["product","Product"]},{"url":"https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26335"},{"url":"https://www.calero.com"},{"url":"https://github.com/advisories/GHSA-pw8j-97jq-cw6g"}],"sources":{"cve":[{"id":"CVE-2026-26335","title":"Calero VeraSMART \u003c 2022 R1 Static IIS Machine Keys Enable ViewState RCE","description":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\\\Program Files (x86)\\\\Veramark\\\\VeraSMART\\\\WebRoot\\\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.","status":"published","published":"2026-02-13T20:51:26.374Z","modified":"2026-07-14T15:54:07.998Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-7363","description":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\\\Program Files (x86)\\\\Veramark\\\\VeraSMART\\\\WebRoot\\\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.","status":"published","published":"2026-02-13T20:51:26Z","modified":"2026-07-14T15:54:07Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T18:19:59.200665Z"}],"ghsa":[{"id":"GHSA-pw8j-97jq-cw6g","title":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured...","description":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\\\Program Files (x86)\\\\Veramark\\\\VeraSMART\\\\WebRoot\\\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.","status":"published","published":"2026-02-13T21:31:40Z","modified":"2026-02-27T00:32:47Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T15:06:24.001962Z"}],"nvd":[{"id":"CVE-2026-26335","description":"Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\\\Program Files (x86)\\\\Veramark\\\\VeraSMART\\\\WebRoot\\\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.","status":"published","published":"2026-02-13T21:16:52.927Z","modified":"2026-06-17T10:26:06.94Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T14:12:05.908608Z"}]}}