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CVE-2026-50258

🗓️ 05 Jun 2026 10:31:39Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 8 Views

Stack buffer overflow in Xorg X11 server and Xwayland from unchecked Xkb shift levels; may crash or escalate privileges.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-50258
5 Jun 202610:31
attackerkb
Cvelist
CVE-2026-50258 Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels
5 Jun 202610:31
cvelist
Debian CVE
CVE-2026-50258
5 Jun 202610:31
debiancve
EUVD
EUVD-2026-34815
5 Jun 202610:31
euvd
NVD
CVE-2026-50258
5 Jun 202612:16
nvd
OSV
DEBIAN-CVE-2026-50258
5 Jun 202605:48
osv
Positive Technologies
PT-2026-46938
5 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-50258
5 Jun 202610:31
redhatcve
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server-Xwayland",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server-Xwayland",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server-Xwayland",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  }
]

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05 Jun 2026 13:27Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.8
8