CVE-2004-0257 json
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash) by sending an IPv6 packet with a small MTU…
published 2004-09-01 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0257
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash) by sending an IPv6 packet with a small MTU to a listening port and then issuing a TCP connect to that port.
Patch / fix
- securityfocus.com/bid/9577 advisory
Exploit prediction
2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
References
-
securityfocus.com
/bid/9577
vdb-entry, patch, vendor-advisory
- guninski.com /obsdmtu.html
- openbsd.org /cgi-bin/cvsweb/src/sys/netinet6/ip6_output.c
-
marc.info
/?l=bugtraq&m=107604603226564&w=2
mailing-list
-
lists.grok.org.uk
/pipermail/full-disclosure/2004-February/016704.html
mailing-list
-
osvdb.org
/3825
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/15044
vdb-entry
Sources
- CVE List CVE-2004-0257
- NVD CVE-2004-0257
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.