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CVE-2025-1673: Out of bounds read when calling crc16_ansi and strlen in dns_validate_msg

8.2 CVSS

Description

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.

Classification

CVE ID: CVE-2025-1673

CVSS Base Severity: HIGH

CVSS Base Score: 8.2

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Problem Types

Out-of-bounds Read

Affected Products

Vendor: zephyrproject-rtos

Product: Zephyr

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.08% (probability of being exploited)

EPSS Percentile: 20.77% (scored less or equal to compared to others)

EPSS Date: 2025-03-26 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-1673
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-jjhx-rrh4-j8mx

Timeline