{"id":"CVE-2026-117611","state":"PUBLISHED","title":"Trust of compromised eMudhra root CA in bundled CA stores","description":"Improper certificate validation in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL): the Certificate Authority stores bundled with \"certifi\" and \"webpki-roots\" include a root CA that trusts eMudhra (emSign) intermediate certificates whose private keys are public.","publishedAt":"2026-10-29T09:32:57.964Z","updatedAt":"2026-10-29T14:13:09.797Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H","source":"Checkmk"},"assigner":"Checkmk","products":["Checkmk GmbH Checkmk"],"affected":[{"vendor":"Checkmk GmbH","product":"Checkmk","defaultStatus":"unaffected","versions":[{"version":"2.5.0","status":"affected","lessThan":"2.5.0p18","versionType":"semver"},{"version":"2.4.0","status":"affected","lessThan":"2.4.0p39","versionType":"semver"},{"version":"2.3.0","status":"affected","lessThan":"2.3.0p52","versionType":"semver"},{"version":"2.2.0","status":"affected","versionType":"semver"}]}],"references":["https://checkmk.com/werk/22623","https://checkmk.com/werk/22169","https://github.com/advisories/GHSA-6q48-6c7w-9gw2"],"weaknesses":["CWE-295","CWE-1395"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/117xxx/CVE-2026-117611.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-117611","state":"PUBLISHED","datePublished":"2026-10-29T09:32:57.964Z","dateUpdated":"2026-10-29T14:13:09.797Z","assignerShortName":"Checkmk","assignerOrgId":"f7d6281c-4801-44ce-ace2-493291dedb0f","dateReserved":"2026-10-27T13:09:00.724Z"},"containers":{"cna":{"title":"Trust of compromised eMudhra root CA in bundled CA stores","descriptions":[{"lang":"en","value":"Improper certificate validation in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL): the Certificate Authority stores bundled with \"certifi\" and \"webpki-roots\" include a root CA that trusts eMudhra (emSign) intermediate certificates whose private keys are public."}],"affected":[{"vendor":"Checkmk GmbH","product":"Checkmk","defaultStatus":"unaffected","versions":[{"version":"2.5.0","status":"affected","lessThan":"2.5.0p18","versionType":"semver"},{"version":"2.4.0","status":"affected","lessThan":"2.4.0p39","versionType":"semver"},{"version":"2.3.0","status":"affected","lessThan":"2.3.0p52","versionType":"semver"},{"version":"2.2.0","status":"affected","versionType":"semver"}]}],"references":[{"url":"https://checkmk.com/werk/22623","tags":["vendor-advisory"]},{"url":"https://checkmk.com/werk/22169","tags":["vendor-advisory"]},{"url":"https://github.com/advisories/GHSA-6q48-6c7w-9gw2","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","description":"CWE-295: Improper Certificate Validation","lang":"en","type":"CWE"},{"cweId":"CWE-1395","description":"CWE-1395: Dependency on Vulnerable Third-Party Component","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Checkmk","orgId":"f7d6281c-4801-44ce-ace2-493291dedb0f","dateUpdated":"2026-10-29T09:32:57.964Z"},"impacts":[{"capecId":"CAPEC-94","descriptions":[{"lang":"en","value":"CAPEC-94: Adversary in the Middle"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*","versionStartIncluding":"2.5.0","versionEndExcluding":"2.5.0p18"},{"vulnerable":true,"criteria":"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*","versionStartIncluding":"2.4.0","versionEndExcluding":"2.4.0p39"},{"vulnerable":true,"criteria":"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*","versionStartIncluding":"2.3.0","versionEndExcluding":"2.3.0p52"},{"vulnerable":true,"criteria":"cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*"}]}]}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T14:12:49.762481Z","id":"CVE-2026-117611","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T14:13:09.797Z"}}]}}}