{"id":"CVE-2026-50262","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-50262","generatedAt":"2026-10-28T04:11:25.480Z","title":"An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes().","description":"An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.","published":"2026-06-05T12:16:40.000Z","lastModified":"2026-08-05T00:17:04.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["x.org/x server","x.org/xwayland","redhat/enterprise linux"],"epss":{"score":0.00132,"percentile":0.02768,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:26562","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:26566","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:26590","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:26610","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:26709","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:28923","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:29844","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36083","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36085","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36086","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36087","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36632","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36633","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36634","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36768","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36791","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36792","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36798","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:38502","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:38810","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46377","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46382","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46385","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46392","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46456","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46460","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:46473","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:49519","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-50262","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2485387","tags":["Issue Tracking","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/6d459e4daf715bea8abdafa8fb130be2f8a1d145","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://lists.x.org/archives/xorg-announce/2026-June/003702.html","tags":["Mailing List","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://redhat.atlassian.net/browse/PSIRTSUPT-16950","tags":["Permissions Required"],"source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-50262","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}