CVE-2026-41285

MEDIUM

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.

CVE Details

CVSS v3.1 Score4.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack VectorADJACENT_NETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/21/2026

Last Modified4/21/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-1284

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)

IOC Correlations

No correlations recorded

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