CVE-2025-12899 — Type Confusion in Zephyr

CWE-843 — Type Confusion2 documents2 sources
Severity
6.5MEDIUMNVD
EPSS
0.0%
top 95.55%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Zephyrproject-rtos Zephyr
Timeline
PublishedJan 30

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:LExploitability: 3.9 | Impact: 2.5

Affected Packages1 packages

▶CVEListV5zephyrproject-rtos/zephyr* — 4.2

🔴Vulnerability Details

1
CVEList
net: icmp: Out of bound memory read↗2026-01-30
▶
CVE-2025-12899 — Type Confusion in Zephyr | cvebase