MEDIUM
CVE-2026-41285
CWE-1284Published: April 21, 2026· Updated: Apr 24, 2026
4.3
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.6th
Official 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.
Technical Analysis
CVE-2026-41285 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
openbsd1 product
openbsd
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (3)
→
https://www.openbsd.org/errata78.htmlProduct · Release Notes
→
https://www.rfc-editor.org/rfc/rfc4861#section-4.6Not Applicable
Quick Facts
CVE IDCVE-2026-41285
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-1284
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 21, 2026
Related CVEs (CWE-1284)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-41285 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.