Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Openbsd | <= 7.8 |
Related Weaknesses (CWE)
References
- https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115fPatch
- https://www.openbsd.org/errata78.htmlProductRelease Notes
- https://www.rfc-editor.org/rfc/rfc4861#section-4.6Not Applicable
FAQ
What is CVE-2026-41285?
CVE-2026-41285 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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_op...
How severe is CVE-2026-41285?
CVE-2026-41285 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41285?
Check the references section above for vendor advisories and patch information. Affected products include: Openbsd Openbsd.