What is CVE-2025-1673?

CVE-2025-1673 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2025-02-25.

How severe is CVE-2025-1673?

High severity. CVSS v3 base score is 8.2 out of 10.

Out-of-bounds Read in Zephyrproject Zephyr

CVE-2025-1673

A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (26.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

vulnerabilities@zephyrproject.org (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2025-1673?: CVE-2025-1673 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2025-02-25.
How severe is CVE-2025-1673?: High severity. CVSS v3 base score is 8.2 out of 10.