CVE-2026-41285 json
In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor Discovery (ND) option…
published 2026-04-20 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-23996
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected products
- OpenBSD OpenBSD
Classification
References
-
github.com
/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f
patch
-
rfc-editor.org
/rfc/rfc4861#section-4.6
not-applicable
-
openbsd.org
/errata78.html
product, release-notes
Sources
- CVE List CVE-2026-41285
- NVD CVE-2026-41285
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