CVE-2026-41285: In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor…
CVE-2026-41285 · Severity: medium · CVSS 4.3 · Published 2026-04-21
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-41285 being exploited in the wild.
How severe is CVE-2026-41285?
Medium severity, with a CVSS score of 4.3, published 21 April 2026.
Which products and versions are affected?
Openbsd. The advisory does not name versions.
Is there a fix for CVE-2026-41285?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-41285?
Check whether you run Openbsd. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.