{"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"}}]}}

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