A flaw in Zephyr’s network stack allows an IPv4 packet containing ICMP type 128 to be misclassified as an ICMPv6 Echo Request. This results in an out-of-bounds memory read and creates a potential information-leak vulnerability in the networking subsystem.
{
"cna_assigner": "zephyr",
"cwe_ids": [
"CWE-843"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12899.json"
}{
"extracted_events": [
{
"introduced": "*"
},
{
"fixed": "3.7.2"
},
{
"introduced": "4.0.0"
},
{
"fixed": "4.2.2"
}
],
"source": "AFFECTED_FIELD"
}