What’s Vulnerable › Vulnerabilities

CVE-2026-41285

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-21 · updated 2026-06-17
• Weakness: CWE-1284

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.

Affected products

• OpenBSD: through 7.8

References

• https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f
• https://www.openbsd.org/errata78.html
• https://www.rfc-editor.org/rfc/rfc4861#section-4.6

Get alerted when CVE-2026-41285 or the next vulnerability affects your stack