{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63409","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-16T19:20:28.987Z","datePublished":"2026-08-17T20:57:19.326Z","dateUpdated":"2026-08-18T15:18:00.706Z"},"containers":{"cna":{"title":"Deskflow: Odd-length DSOP options vector causes out-of-bounds read in Deskflow client","problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg"},{"name":"https://github.com/deskflow/deskflow/commit/8266fbbe6af93fa370018886c7f1f35d2cee8b3f","tags":["x_refsource_MISC"],"url":"https://github.com/deskflow/deskflow/commit/8266fbbe6af93fa370018886c7f1f35d2cee8b3f"}],"affected":[{"vendor":"deskflow","product":"deskflow","versions":[{"version":">= 1.17.0, < 1.26.0.296","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-17T20:57:19.326Z"},"descriptions":[{"lang":"en","value":"Deskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.296, a malicious Deskflow server can send an odd-length DSOP vector to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp, causing the missing value after the final option key to be read beyond the vector during the PacketStreamFilter::filterEvent to ServerProxy::handleData() to ServerProxy::parseHandshakeMessage() call chain and crash the connected client. This issue is fixed in continuous build 1.26.0.296."}],"source":{"advisory":"GHSA-gmvh-3c73-m5gg","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-18T15:17:36.309685Z","id":"CVE-2026-63409","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-18T15:18:00.706Z"}}]}}