CVE-2026-41285

MEDIUM EPSS 11.1%
Published Apr 21, 20262mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
11.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-1284
CWE-835

Affected Products 1

VendorProductVersionRange
openbsdopenbsd* ≤7.8

References 3

  • github.com https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f
    Patch
  • openbsd.org https://www.openbsd.org/errata78.html
    ProductRelease Notes
  • rfc-editor.org https://www.rfc-editor.org/rfc/rfc4861#section-4.6
    Not Applicable

Remediation

  • github.com https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f
    Patch