{"id":"CVE-2026-41252","aliases":["DEBIAN-CVE-2026-41252","EUVD-2026-46017","GHSA-w5vg-6qmv-j63j","MGASA-2026-0566","UBUNTU-CVE-2026-41252","openSUSE-SU-2026:11543-1"],"status":"published","title":"xrdp: lib_palette_update Heap Buffer Overflow \u0026 RCE","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01107,"percentile":0.66066,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-122"],"published":"2026-07-20T16:29:53Z","modified":"2026-10-30T01:28:13Z","fixes":[{"ecosystem":"Debian:12","package":"xrdp","fixed_in":["0.9.21.1-1+deb12u3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xrdp","fixed_in":["0.10.1-3.1+deb13u2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xrdp","fixed_in":["0.10.6.1-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.21.1-1+deb12u3"}]}],"versions":["0.9.21.1-1","0.9.21.1-1+deb12u1","0.9.21.1-1+deb12u2"]},{"source":"osv","ecosystem":"Debian:13","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.1-3.1+deb13u2"}]}],"versions":["0.10.1-3.1","0.10.1-3.1+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.6.1-2"}]}],"versions":["0.10.1-3.1","0.10.1-4","0.10.1-4.1","0.10.2-1","0.10.2-2","0.10.4.1-1","0.10.4.1-2","0.10.5-1","0.10.5-2","0.10.5-3","0.10.5-4","0.10.5-5","0.10.6-1","0.10.6-2","0.10.6-3","0.10.6-4","0.10.6-5","0.10.6.1-1","0.10.6.1-2~bpo13+1"]},{"source":"osv","ecosystem":"Mageia:10","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.6.1-2.mga10"}]}],"bundled":10},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0-1","0.6.0-1ubuntu0.1","0.6.0-1ubuntu0.1+esm1","0.6.0-1ubuntu0.1+esm2","0.6.0-1ubuntu0.1+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.1-2","0.6.1-2ubuntu0.1","0.6.1-2ubuntu0.3","0.6.1-2ubuntu0.3+esm1","0.6.1-2ubuntu0.3+esm2","0.6.1-2ubuntu0.3+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.1-9","0.9.4-1","0.9.4-2","0.9.4-3","0.9.4-4","0.9.4-5","0.9.5-1","0.9.5-1build1","0.9.5-2","0.9.5-2ubuntu0.1~esm1","0.9.5-2ubuntu0.1~esm2","0.9.5-2ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.9-1","0.9.12-1","0.9.12-1ubuntu0.1","0.9.12-1ubuntu0.1+esm1","0.9.12-1ubuntu0.1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.15-1ubuntu1","0.9.17-1","0.9.17-2","0.9.17-2ubuntu1","0.9.17-2ubuntu2","0.9.17-2ubuntu2+esm1","0.9.17-2ubuntu3","0.9.17-2ubuntu3+esm1","0.9.17-2ubuntu3+esm2","0.9.17-2ubuntu3.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.21.1-1","0.9.24-2","0.9.24-3","0.9.24-3build1","0.9.24-3build2","0.9.24-4","0.9.24-4ubuntu0.1~esm1","0.9.24-4ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.1-3","0.10.1-3.1","0.10.1-3.1+deb13u1build0.25.10.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.1-4.1","0.10.6.1-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.1-3.1","0.10.1-4","0.10.1-4.1","0.10.1-4.1ubuntu0.1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"xrdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.6.1-1.1"}]}],"bundled":10}],"products":[{"vendor":"neutrinolabs","product":"xrdp"}],"references":[{"url":"https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-w5vg-6qmv-j63j","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","report"]},{"url":"https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41252.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41252","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-41252","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0566.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35945","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5ZQ6QE47Z3SMILAAOHQ2RKDQFJOK2M4X/","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JWYOEVBA3574FXNPXKDS3FPNCQ3SDAOM/","tags":["web"]},{"url":"https://lists.debian.org/debian-security-announce/2026/msg00380.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-41252","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41252","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41252","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41521","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42218","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-44178","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-44978","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-54538","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55238","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55626","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55639","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-55645","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-41252","title":"xrdp: lib_palette_update Heap Buffer Overflow \u0026 RCE","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T16:29:53.496Z","modified":"2026-07-23T03:56:20.804Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-46017","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T16:29:53Z","modified":"2026-07-23T03:56:20Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:19:44.433437Z"}],"nvd":[{"id":"CVE-2026-41252","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T17:17:08.31Z","modified":"2026-10-24T20:10:00.137Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:31.024898Z"}],"osv":[{"id":"CVE-2026-41252","title":"xrdp: lib_palette_update Heap Buffer Overflow \u0026 RCE","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T16:29:53.496Z","modified":"2026-10-28T02:30:53.998322663Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:45:03.764807Z"},{"id":"DEBIAN-CVE-2026-41252","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T17:17:08.31Z","modified":"2026-10-25T09:47:34.932617808Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"UBUNTU-CVE-2026-41252","description":"xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.","status":"published","published":"2026-07-20T17:17:00Z","modified":"2026-10-17T12:58:15.025162599Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"MGASA-2026-0566","title":"Updated xrdp package fixes security vulnerabilities","description":"lib_palette_update Heap Buffer Overflow \u0026 RCE. (CVE-2026-41252)\nlib_framebuffer_update Has Integer Overflow Heap Info Leak \u0026 ASLR\nBypass. (CVE-2026-41521)\nChannel Data Forwarding Fixed-Size Buffer Overflow. (CVE-2026-44178)\nXRDP is vulnerable to a server timing attack, leading to user\nenumeration. (CVE-2026-42218)\nUnchecked FIPS padding length in standard RDP Security causes heap\nout-of-bounds read in HMAC verification. (CVE-2026-44978)\nPre-auth infinite loop via totalLength=0 in TS_SHARECONTROLHEADER.\n(CVE-2026-54538)\nMalformed Confirm Active capability sets cause out-of-bounds reads.\n(CVE-2026-55238)\nNo authentication required with Xvnc backend. (CVE-2026-55626)\nOut-of-bounds read in GCC Conference Create Request CS_SECURITY\nprocessing (xrdp_sec_process_mcs_data_CS_SECURITY). (CVE-2026-55639)\nOut-of-bounds read in Client Control PDU processing\n(xrdp_rdp_process_data_control). (CVE-2026-55645)\n","status":"published","published":"2026-10-30T01:10:00Z","modified":"2026-10-30T01:28:13.647254405Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:11543-1","title":"xrdp-0.10.6.1-1.1 on GA media","description":"These are all security issues fixed in the xrdp-0.10.6.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-08-18T00:00:00Z","modified":"2026-08-19T18:23:34.611687905Z","updated_at":"2026-11-02T16:58:39.516824Z"}]}}