{"id":"CVE-2026-41476","aliases":["DEBIAN-CVE-2026-41476","EUVD-2026-25622","UBUNTU-CVE-2026-41476"],"status":"published","title":"Deskflow: clipboard deserialization global-buffer-overflow","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","severity":{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00344,"percentile":0.28264,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120"],"published":"2026-04-24T19:47:45Z","modified":"2026-11-11T23:10:00Z","fixes":[{"ecosystem":"Debian:14","package":"deskflow","fixed_in":["1.26.0+dfsg-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"deskflow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.0+dfsg-7","1.23.0+dfsg-1","1.23.0+dfsg-2","1.24.0+dfsg-1","1.24.0+dfsg-2","1.25.0+dfsg-1","1.25.0+dfsg-2","1.25.0+dfsg-3","1.26.0+dfsg-1","1.26.0+dfsg-2","1.26.0+dfsg-3","1.26.0+dfsg-4","1.26.0+dfsg-5"]},{"source":"osv","ecosystem":"Debian:14","package":"deskflow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.0+dfsg-2"}]}],"versions":["1.22.0+dfsg-7","1.23.0+dfsg-1","1.23.0+dfsg-2","1.24.0+dfsg-1","1.24.0+dfsg-2","1.25.0+dfsg-1","1.25.0+dfsg-2","1.25.0+dfsg-3","1.26.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"deskflow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20.1+dfsg-1","1.21.2+dfsg-1","1.22.0+dfsg-2","1.22.0+dfsg-3","1.22.0+dfsg-4","1.22.0+dfsg-6","1.22.0+dfsg-7","1.23.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"deskflow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.0+dfsg-1","1.26.0+dfsg-3","1.26.0+dfsg-5ubuntu1","1.27.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"deskflow","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.23.0+dfsg-1","1.24.0+dfsg-2","1.25.0+dfsg-2","1.25.0+dfsg-3","1.26.0+dfsg-1"]}],"products":[{"vendor":"deskflow","product":"deskflow"}],"references":[{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","report"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-41476","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-41476","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41476","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-41476","title":"Deskflow: clipboard deserialization global-buffer-overflow","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","status":"published","published":"2026-04-24T19:47:45.316Z","modified":"2026-04-24T20:15:40.568Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T13:40:57.334596Z"}],"euvd":[{"id":"EUVD-2026-25622","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","status":"published","published":"2026-04-24T19:47:45Z","modified":"2026-04-24T20:15:40Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"}],"updated_at":"2026-11-02T19:24:18.224827Z"}],"nvd":[{"id":"CVE-2026-41476","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","status":"published","published":"2026-04-24T20:16:28.207Z","modified":"2026-11-11T23:10:00.263Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-12T01:26:59.157514Z"}],"osv":[{"id":"DEBIAN-CVE-2026-41476","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","status":"published","published":"2026-04-24T20:16:28.207Z","modified":"2026-10-01T03:02:45.036621154Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"UBUNTU-CVE-2026-41476","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","status":"published","published":"2026-04-24T20:16:00Z","modified":"2026-10-17T12:58:15.29114859Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:18.393417Z"}]}}