MEDIUM
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
Published Sep 1, 2004
5.0
MEDIUMCVSS 2.0
EPSS 2.47%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.47% 0.02473
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02473
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.47% (0.02473) | 83.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.47% (0.02473) | 82.39th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.03% (0.02029) | 82.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.93% (0.02926) | 91.18th | v3 (v2023.03.01) |
| Aug 9, 2023 | 2.33% (0.02328) | 88.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.52% (0.04520) | 91.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (8)
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-002.txt.asc vendor-advisoryx_refsource_NETBSD
- http://lists.grok.org.uk/pipermail/full-disclosure/2004-February/016704.html mailing-listx_refsource_FULLDISC
- http://marc.info/?l=bugtraq&m=107604603226564&w=2 mailing-listx_refsource_BUGTRAQ
- http://www.guninski.com/obsdmtu.html x_refsource_MISC
- http://www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet6/ip6_output.c x_refsource_CONFIRM
- http://www.osvdb.org/3825 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/9577 vdb-entryx_refsource_BIDPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/15044 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-002.txt.asc | vendor-advisoryx_refsource_NETBSD | |
| http://lists.grok.org.uk/pipermail/full-disclosure/2004-February/016704.html | mailing-listx_refsource_FULLDISC | |
| http://marc.info/?l=bugtraq&m=107604603226564&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://www.guninski.com/obsdmtu.html | x_refsource_MISC | |
| http://www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet6/ip6_output.c | x_refsource_CONFIRM | |
| http://www.osvdb.org/3825 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/9577 | vdb-entryx_refsource_BIDPatchVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/15044 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 1, 2004
Updated Aug 8, 2024
Reserved Mar 17, 2004
Link CVE-2004-0257
CISA Vulnrichment
Updated n/a