{
  "cveId": "CVE-2026-46433",
  "url": "https://patchblox.com/security/cve/CVE-2026-46433",
  "summary": "CVE-2026-46433 is fixed in lldpd on 1 platform, first by DEBIAN-CVE-2026-46433, released May 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "lldpd: Heap OOB Read in VLAN Decapsulation memmove",
  "description": "lldpd is an implementation of IEEE 802.1ab (LLDP). Prior to version 1.0.22, lldpd_decode() in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove() to shift the frame payload 4 bytes left. The third argument (byte count) is s - 2 * ETHER_ADDR_LEN but should be s - 2 * ETHER_ADDR_LEN - 4, causing a 4-byte heap buffer over-read past the malloc(h_mtu) allocation when the received frame size equals the interface MTU. This issue has been patched in version 1.0.22.",
  "published": "2026-06-09T23:16:59Z",
  "severity": "Moderate",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Out-of-bounds Read",
  "epss": 0.00225,
  "epssPercentile": 0.13306,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46433",
  "fixes": [
    {
      "platform": "linux",
      "product": "lldpd",
      "release": "Debian 14",
      "fixedVersion": "1.0.22-1",
      "fix": "DEBIAN-CVE-2026-46433",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-46433",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "lldpd",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.0.22-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21146-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21146-1",
      "released": "2026-06-22T13:05:26Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}