{"id":"CVE-2026-26335","state":"PUBLISHED","title":"Calero VeraSMART < 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.","publishedAt":"2026-02-13T20:51:26.374Z","updatedAt":"2026-07-14T15:54:07.998Z","severity":{"score":9.3,"label":"Critical","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["Calero VeraSMART"],"affected":[{"vendor":"Calero","product":"VeraSMART","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2022 R1","versionType":"custom"}]}],"references":["https://www.calero.com/","https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce"],"weaknesses":["CWE-321"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/26xxx/CVE-2026-26335.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-26335","state":"PUBLISHED","datePublished":"2026-02-13T20:51:26.374Z","dateUpdated":"2026-07-14T15:54:07.998Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-02-13T17:28:43.052Z"},"containers":{"cna":{"title":"Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Calero","product":"VeraSMART","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2022 R1","versionType":"custom"}]}],"references":[{"url":"https://www.calero.com/","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-321","description":"CWE-321 Use of Hard-coded Cryptographic Key","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-14T15:54:07.998Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:calero:verasmart:*:*:*:*:*:*:*:*","versionEndExcluding":"2022 r1"}]}]}],"credits":[{"lang":"en","type":"finder","value":"Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp."},{"lang":"en","type":"finder","value":"Jan A. Rodriguez, Pentester Jr., GM Sectec, Corp."}],"x_generator":{"engine":"Vulnogram 0.5.0"},"source":{"discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-13T21:26:36.613624Z","id":"CVE-2026-26335","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-13T21:27:16.720Z"}}]}}}