CVE-1999-0063
UnknownEPSS 8.25%
Last modified
CVE-1999-0063 is a vulnerability of currently unknown severity. Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.. EPSS estimates a 8.25% chance of exploitation in the next 30 days.
Description
Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | 11.3aa |
| Cisco | Ios | 11.3db |
| Cisco | Ios | 12.0 |
| Cisco | Ios | 12.0\(1\)w |
| Cisco | Ios | 12.0\(1\)xa3 |
| Cisco | Ios | 12.0\(1\)xb |
| Cisco | Ios | 12.0\(1\)xe |
| Cisco | Ios | 12.0\(2\)xc |
| Cisco | Ios | 12.0\(2\)xd |
| Cisco | Ios | 12.0db |
| Cisco | Ios | 12.0s |
| Cisco | Ios | 12.0t |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-1999-0063?
Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
How severe is CVE-1999-0063?
Severity scoring for CVE-1999-0063 is pending analysis. The EPSS model estimates a 8.25% probability of exploitation in the next 30 days.
How do I fix CVE-1999-0063?
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-1999-0063?
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Scan your code nowSource: NVD / NIST