# CVE-2026-6507

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## Description

A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).

## Key facts

- **CVE ID:** CVE-2026-6507
- **Published:** 2026-04-17
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-787

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6507

## Citation

> AI Analytics. CVE-2026-6507. Retrieved 2026-07-07 from https://api.ai-analytics.org/cve/CVE-2026-6507. Derived from NIST NVD. Licensed CC0.

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