CVE-2004-0257
UnknownEPSS 2.47%
Last modified
CVE-2004-0257 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.47% chance of exploitation in the next 30 days.
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.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netbsd | Netbsd | 1.6 |
| Netbsd | Netbsd | 1.6.1 |
| Openbsd | Openbsd | 3.0 |
| Openbsd | Openbsd | 3.1 |
| Openbsd | Openbsd | 3.2 |
| Openbsd | Openbsd | 3.3 |
| Openbsd | Openbsd | 3.4 |
References
- http://www.securityfocus.com/bid/9577Patch, Vendor Advisory
- http://www.securityfocus.com/bid/9577Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2004-0257?
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.
How severe is CVE-2004-0257?
Severity scoring for CVE-2004-0257 is pending analysis. The EPSS model estimates a 2.47% probability of exploitation in the next 30 days.
How do I fix CVE-2004-0257?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2004-0257?
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