{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63409 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-63409 is a high-severity memory corruption vulnerability in deskflow, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-63409 and fix it if it is affected.\n\nWhat it is: CVE-2026-63409 is a high-severity memory corruption vulnerability in deskflow, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63409 exists.\n\nAffected product: deskflow. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-63409/ (Markdown: https://insights.sbomify.com/CVE-2026-63409/index.md)","id":"CVE-2026-63409","markdown":"https://insights.sbomify.com/CVE-2026-63409/index.md","name":"CVE-2026-63409","record":{"aliases":["DEBIAN-CVE-2026-63409","GHSA-gmvh-3c73-m5gg","UBUNTU-CVE-2026-63409"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Keyboard mouse sharing app","requires_auth":"none","summary":"A malicious server can crash the Deskflow client by sending an odd-length options vector, causing an out-of-bounds read.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Deskflow: Odd-length DSOP options vector causes out-of-bounds read in Deskflow client","id":"CVE-2026-63409","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"draw.io: Path traversal in ExportProxyServlet allows access to arbitrary backend endpoints","id":"CVE-2026-63416"},"packages":[],"prev":{"headline":"Grav API Plugin: JWT Access Token Accepted via `?token=` URL Query Parameter","id":"CVE-2026-63408"},"products":["deskflow"],"published":"2026-08-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-18","vendors":["deskflow"]},"summary":"A malicious server can crash the Deskflow client by sending an odd-length options vector, causing an out-of-bounds read.","url":"https://insights.sbomify.com/CVE-2026-63409/"}