CVE-2004-0257
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash)...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2004-0257- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2004-0257- Updated
- 2026-11-02
EUVDEUVD-2004-0257 No score
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.
- Record
EUVD-2004-0257- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vqm2-c8wp-mmg7 No score
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash)...
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.
- Record
GHSA-vqm2-c8wp-mmg7- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2004-0257 is a medium vulnerability (CVSS 5.0) in Netbsd, published September 1, 2004. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.47%, the 84th percentile. No source names a fixed version.
References
guninski.com/obsdmtu.html
openbsd.org/cgi-bin/cvsweb/src/sys/netinet6/ip6_output.c
marc.info?l=bugtraq&m=107604603226564&w=2
lists.grok.org.uk/pipermail/full-disclosure/2004-February/016704.html
osvdb.org/3825
exchange.xforce.ibmcloud.com/vulnerabilities/15044
securityfocus.com/bid/9577
nvd.nist.gov/vuln/detail/CVE-2004-0257
github.com/advisories/GHSA-vqm2-c8wp-mmg7