It was discovered that the Inetutils telnet daemon incorrectly handled the CREDENTIALS_DIRECTORY environment variable. An attacker could possibly use this issue to escalate privileges. (CVE-2026-28372)
It was discovered that the Inetutils telnet daemon did not properly validate buffer bounds when processing LINEMODE SLC suboptions. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-32746)
It was discovered that the Inetutils telnet client incorrectly handled the NEW_ENVIRON SEND USERVAR option. An attacker could possibly use this issue to read arbitrary environment variables. (CVE-2026-32772)
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{
"binary_version": "2:2.2-2ubuntu0.2+esm1",
"binary_name": "inetutils-tools"
},
{
"binary_version": "2:2.2-2ubuntu0.2+esm1",
"binary_name": "inetutils-traceroute"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8387-1.json"
{
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2026-28372"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2026-32746"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2026-32772"
}
],
"ecosystem": "Ubuntu:Pro:22.04:LTS"
}