A flaw was found in NetworkManager-l2tp. The plugin writes attacker-controlled VPN connection properties (vpn.data and vpn.secrets values) unescaped into a generated ipsec.conf file that pluto loads as root. A local unprivileged user can create and activate their own L2TP VPN profile containing a newline-injected leftupdown directive; pluto executes that command as root when the IKE security association is established, resulting in local privilege escalation. This is the same bug class as CVE-2018-10900 (NetworkManager-vpnc).
{
"cna_assigner": "fedora",
"cwe_ids": [
"CWE-88"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19624.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.0.16"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.2.0"
},
{
"fixed": "1.2.22"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.8.0"
},
{
"fixed": "1.8.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.20.0"
},
{
"fixed": "1.20.24"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.52.0"
},
{
"fixed": "1.52.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "95b6b46f48a0c9eabc79272cd313f219110ef91c"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "3704d8c9d5e5f9ed1626a8ce7627a04247cea673"
}
],
"source": "REFERENCES_COMMIT"
}
]
}