{"id":"CVE-2021-38406","published":"2021-09-17T19:15:08Z","modified":"2026-06-17T04:02:02Z","title":"Delta Electronics DOPSoft 2 Improper Input Validation Vulnerability","vendor":"Delta Electronics","product":"DOPSoft 2","tier":"core","eol":null,"description":{"text":"Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files. This could result in multiple out-of-bounds write instances. An attacker could leverage this vulnerability to execute code in the context of the current process.","provenance":"source","from":"NVD"},"summary":{"text":"Delta Electronics DOPSoft 2 lacks proper validation of user-supplied data when parsing specific project files, which leads to multiple out-of-bounds write instances. An attacker with local access who can get a user to open a crafted project file could execute code in the context of the current process.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:01Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.76428,"percentile":0.99539,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2022-08-25","dueDate":"2022-09-15","ransomware":false,"requiredAction":"The impacted product is end-of-life and should be disconnected if still in use.","notes":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-252-02; https://nvd.nist.gov/vuln/detail/CVE-2021-38406","provenance":"source"},"vulncheckKev":{"dateAdded":"2022-08-25","exploitedFirstSeen":"2022-08-25","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-08-25"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-252-02","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-252-02","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38406","tags":["US Government Resource"]}],"techniques":[{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: user opens malicious project file","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"lacks proper validation of user-supplied data when parsing specific project files","start":55,"end":136}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: memory corruption in parser enables code execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"could result in multiple out-of-bounds write instances","start":143,"end":197}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-24858","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-24858","exploited":true,"exploitedSince":"2022-08-25","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"},{"stage":"primary","techniques":["T1203"],"provenance":"ai"}],"timeline":[{"date":"2021-09-17","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38406","provenance":"source"},{"date":"2022-08-25","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV 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found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}