{
  "cveId": "CVE-2021-27803",
  "url": "https://patchblox.com/security/cve/CVE-2021-27803",
  "summary": "CVE-2021-27803 is fixed in 4 products on 1 platform, first by hostapd 2:2.6-15ubuntu2.8, released February 26, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "wpa_supplicant: The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and va...",
  "description": "The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver.\n\nSecurity Fix(es):\n\n* wpa_supplicant: Use-after-free in P2P provision discovery processing (CVE-2021-27803)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2021-02-26T15:15:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "epss": 0.01228,
  "epssPercentile": 0.69061,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "hostapd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:2.6-15ubuntu2.8",
      "fix": "hostapd 2:2.6-15ubuntu2.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-hostapd-2-2.6-15ubuntu2.8",
      "released": "2021-02-26T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "hostapd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:2.9-1ubuntu4.3",
      "fix": "hostapd 2:2.9-1ubuntu4.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-hostapd-2-2.9-1ubuntu4.3",
      "released": "2021-02-26T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "wpa_supplicant",
      "release": "RHEL 8",
      "fixedVersion": "1:2.9-2.el8_3.1",
      "fix": "RHSA-2021:0809",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-0809",
      "released": "2021-03-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "wpa_supplicant",
      "release": "ol 8",
      "fixedVersion": "1:2.9-2.el8_3.1",
      "fix": "ELSA-2021-0809",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-0809",
      "released": "2021-03-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "wpagui",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:2.6-15ubuntu2.8",
      "fix": "wpagui 2:2.6-15ubuntu2.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-wpagui-2-2.6-15ubuntu2.8",
      "released": "2021-02-26T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "wpagui",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:2.9-1ubuntu4.3",
      "fix": "wpagui 2:2.9-1ubuntu4.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-wpagui-2-2.9-1ubuntu4.3",
      "released": "2021-02-26T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "wpasupplicant",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:2.6-15ubuntu2.8",
      "fix": "wpasupplicant 2:2.6-15ubuntu2.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-wpasupplicant-2-2.6-15ubuntu2.8",
      "released": "2021-02-26T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "wpasupplicant",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:2.9-1ubuntu4.3",
      "fix": "wpasupplicant 2:2.9-1ubuntu4.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-wpasupplicant-2-2.9-1ubuntu4.3",
      "released": "2021-02-26T15:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}