{
  "fix": "liblwip0 2.1.2\u002Bdfsg1-4ubuntu0.1~esm1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-liblwip0-2.1.2-dfsg1-4ubuntu0.1-esm1",
  "summary": "liblwip0 2.1.2\u002Bdfsg1-4ubuntu0.1~esm1, released May 18, 2026, fixes 4 CVEs in liblwip0. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "liblwip0 2.1.2\u002Bdfsg1-4ubuntu0.1~esm1 for Ubuntu 20.04.3 LTS (focal)",
  "released": "2026-05-18T12:16:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2020-8597, high severity",
  "supported": false,
  "cveCount": 4,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.19925,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "liblwip0",
      "productUrl": "https://patchblox.com/security/product/linux/liblwip0",
      "release": "Ubuntu 20.04.3 LTS (focal)",
      "fixedVersion": "2.1.2\u002Bdfsg1-4ubuntu0.1~esm1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2020-8597",
      "url": "https://patchblox.com/security/cve/CVE-2020-8597",
      "title": "ppp: eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflowin the eap_request and eap_response functions.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.19925,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-22283",
      "url": "https://patchblox.com/security/cve/CVE-2020-22283",
      "title": "liblwip0: A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundatio...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01404,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-22284",
      "url": "https://patchblox.com/security/cve/CVE-2020-22284",
      "title": "liblwip0: A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01206,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-8836",
      "url": "https://patchblox.com/security/cve/CVE-2026-8836",
      "title": "lwip: A vulnerability was found in lwIP up to 2.2.1",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01097,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-14T14:09:31Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}