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.
Published: 2026-04-20
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 21 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 21 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Openbsd
Openbsd openbsd
Weaknesses CWE-1284
CPEs cpe:2.3:a:openbsd:openbsd:*:*:*:*:*:*:*:*
Vendors & Products Openbsd
Openbsd openbsd
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Mon, 20 Apr 2026 23:30:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-21T13:27:42.310Z

Reserved: 2026-04-20T00:00:00.000Z

Link: CVE-2026-41285

cve-icon Vulnrichment

Updated: 2026-04-21T13:27:37.961Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-21T00:16:29.480

Modified: 2026-04-21T16:20:24.180

Link: CVE-2026-41285

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-21T00:30:22Z

Weaknesses