CVE-1999-0063 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 8.2% (pctl 95)
Patch early
A public exploit exists.
Description
Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 8.25% — more likely to be exploited than 95% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 1999-01-11 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| cisco | ios |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Cisco IOS 12.0.2 - Syslog Crash | 1999-01-11 |
References
→ the Explorer · watch your stack · NVD