{"document":{"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright © Red Hat, Inc. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"legal_disclaimer","text":"This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.","title":"Terms of Use"}],"publisher":{"category":"vendor","contact_details":"https://access.redhat.com/security/team/contact/","issuing_authority":"Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.","name":"Red Hat Product Security","namespace":"https://www.redhat.com"},"references":[{"category":"self","summary":"Canonical URL","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55626.json"}],"title":"xrdp: missing authentication when xrdp launches Xvnc in UNIX domain socket mode","tracking":{"current_release_date":"2026-07-21T20:33:42+00:00","generator":{"date":"2026-07-21T20:33:42+00:00","engine":{"name":"Red Hat SDEngine","version":"5.3.7"}},"id":"CVE-2026-55626","initial_release_date":"2026-07-20T17:11:44.442000+00:00","revision_history":[{"date":"2026-07-20T17:11:44.442000+00:00","number":"1","summary":"Initial version"},{"date":"2026-07-20T19:51:59+00:00","number":"2","summary":"Current version"},{"date":"2026-07-21T20:33:42+00:00","number":"3","summary":"Last generated version"}],"status":"final","version":"3"}},"product_tree":{"branches":[{"category":"vendor","name":"Red Hat","product":{"name":"All currently supported Red Hat products","product_id":"red_hat_products","product_identification_helper":{"cpe":"cpe:/a:redhat"}}}]},"vulnerabilities":[{"cve":"CVE-2026-55626","discovery_date":"2026-07-20T18:01:44.077292+00:00","flags":[{"label":"vulnerable_code_not_present","product_ids":["red_hat_products"]}],"notes":[{"category":"description","text":"xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated attacker could exploit this vulnerability to bypass intended session isolation, allowing them to unauthorizedly view or control the active desktop sessions of other users on the same system. Users using other backends, such as xorgxrdp or Xvnc over TCP sockets, are not affected. This issue has been fixed in version 0.10.6.1.","title":"Vulnerability description"},{"category":"other","text":"Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.","title":"Statement"},{"category":"general","text":"The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.","title":"CVSS score applicability"}],"product_status":{"known_not_affected":["red_hat_products"]},"references":[{"category":"self","summary":"Canonical URL","url":"https://access.redhat.com/security/cve/CVE-2026-55626"},{"category":"external","summary":"https://www.cve.org/CVERecord?id=CVE-2026-55626","url":"https://www.cve.org/CVERecord?id=CVE-2026-55626"}],"release_date":"2026-07-20T17:11:44.442000+00:00","scores":[{"cvss_v3":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":8.0,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"products":["red_hat_products"]}],"title":"xrdp: missing authentication when xrdp launches Xvnc in UNIX domain socket mode"}]}