{"id":"CVE-2025-12899","aliases":["EUVD-2025-206577","GHSA-c2vg-hj83-c2vg"],"status":"published","title":"net: icmp: Out of bound memory read","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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00334,"percentile":0.2702,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-843"],"published":"2026-01-30T05:34:19Z","modified":"2026-10-28T02:30:30Z","products":[{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c2vg-hj83-c2vg","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12899.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-12899","tags":["advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-12899","title":"net: icmp: Out of bound memory read","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.","status":"published","published":"2026-01-30T05:34:19.703Z","modified":"2026-10-13T19:56:39.159Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T14:32:41.743125Z"}],"euvd":[{"id":"EUVD-2025-206577","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.","status":"published","published":"2026-01-30T05:34:19Z","modified":"2026-10-13T19:56:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T17:27:18.769576Z"}],"nvd":[{"id":"CVE-2025-12899","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.","status":"published","published":"2026-01-30T06:16:01.87Z","modified":"2026-10-13T20:17:00.383Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T14:11:59.073638Z"}],"osv":[{"id":"CVE-2025-12899","title":"net: icmp: Out of bound memory read","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.","status":"published","published":"2026-01-30T05:34:19.703Z","modified":"2026-10-28T02:30:30.646402826Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T15:44:46.024537Z"}]}}