CVE-2026-41285
mediumIn 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 networ…
Vendor / product: Openbsd — openbsd
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
4.3
4.3 (CVSS v3.1)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (cve@mitre.org)
Timeline (UTC)
Published: 2026-04-21 00:16
Modified: 2026-11-11 23:10
NVD status: Analyzed
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:12 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
openbsd / openbsd ≤7.8
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f
References
- https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f cve@mitre.org
- https://www.openbsd.org/errata78.html cve@mitre.org
- https://www.rfc-editor.org/rfc/rfc4861#section-4.6 cve@mitre.org
Data sources
NVD CVE API 2.0 — fetched 2026-11-11 23:12 UTC · record ↗