{"id":"CVE-2026-27649","state":"PUBLISHED","title":"CTEK Chargeportal Insufficient Session Expiration","description":"The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.","publishedAt":"2026-03-20T22:46:40.106Z","updatedAt":"2026-03-23T14:17:03.447Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","source":"icscert"},"assigner":"icscert","products":["CTEK Chargeportal"],"affected":[{"vendor":"CTEK","product":"Chargeportal","defaultStatus":"unaffected","versions":[{"version":"All versions","status":"affected","versionType":"custom"}]}],"references":["https://www.cisa.gov/news-events/ics-advisories/icsa-26-078-06","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-078-06.json","https://www.ctek.com/support"],"weaknesses":["CWE-613"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27649.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27649","state":"PUBLISHED","datePublished":"2026-03-20T22:46:40.106Z","dateUpdated":"2026-03-23T14:17:03.447Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2026-03-12T16:52:46.523Z"},"containers":{"cna":{"title":"CTEK Chargeportal Insufficient Session Expiration","descriptions":[{"lang":"en","value":"The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests."}],"affected":[{"vendor":"CTEK","product":"Chargeportal","defaultStatus":"unaffected","versions":[{"version":"All versions","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-078-06"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-078-06.json"},{"url":"https://www.ctek.com/support"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW","baseSeverity":"HIGH","baseScore":7.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-613","lang":"en","description":"CWE-613","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateUpdated":"2026-03-20T22:46:40.106Z"},"datePublic":"2026-03-19T16:18:00.000Z","workarounds":[{"lang":"en","value":"CTEK will be sunsetting this product in April 2026. Please contact CTEK for more information  https://www.ctek.com/support .","supportingMedia":[{"type":"text/html","base64":false,"value":"CTEK will be sunsetting this product in April 2026. Please contact CTEK for more information&nbsp;<a target=\"_blank\" rel=\"nofollow\" href=\"https://www.ctek.com/support\">https://www.ctek.com/support</a>."}]}],"credits":[{"lang":"en","value":"Khaled Sarieddine and Mohammad Ali Sayed reported this vulnerability to CISA.","type":"finder"}],"source":{"advisory":"ICSA-26-078-06","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-23T14:16:51.091210Z","id":"CVE-2026-27649","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-23T14:17:03.447Z"}}]}}}