# CVE-2026-41285

> Vulnerability · severity: **MEDIUM** (CVSS 4.3).

## Description

In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor Discovery (ND) option (over a local network) with length zero, because of an "nd_opt_len * 8 - 2" expression with no preceding check for whether nd_opt_len is zero.

## Key facts

- **CVE ID:** CVE-2026-41285
- **Published:** 2026-04-21
- **CVSS severity:** MEDIUM
- **CVSS base score:** 4.3
- **CWE codes:** CWE-1284, CWE-835

## Affected products

- `openbsd:openbsd`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41285

## Citation

> AI Analytics. CVE-2026-41285. Retrieved 2026-07-06 from https://api.ai-analytics.org/cve/CVE-2026-41285. Derived from NIST NVD. Licensed CC0.

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