๐Ÿ” CVE Alert

CVE-2026-41285

MEDIUM 4.3
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-1284
Vendor openbsd
Product openbsd
Published Apr 20, 2026
Last Updated Apr 20, 2026
Stay Ahead of the Next One

Get instant alerts for openbsd openbsd

Be the first to know when new medium vulnerabilities affecting openbsd openbsd are published โ€” delivered to Slack, Telegram or Discord.

Get Free Alerts โ†’ Free ยท No credit card ยท 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

OpenBSD / OpenBSD
0 โ‰ค 7.8

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
rfc-editor.org: https://www.rfc-editor.org/rfc/rfc4861#section-4.6 github.com: https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f openbsd.org: https://www.openbsd.org/errata78.html