CVE-2000-0268
MEDIUM · CVSS 5.0EPSS 1.7%EU EUVD
Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 1.7% (76th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2000-0267)
- Published
- April 20, 2000
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2000-0267 in the EU Vulnerability Database. Last updated in EUVD on August 8, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / 3660 router
- cisco / 7100 router
- cisco / 7200 router
- cisco / 7500 router
- cisco / accesspath
- cisco / accesspath
- cisco / accesspath
- cisco / as5200
- cisco / as5300
- cisco / as5800
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / ios
- cisco / system controller 3640
- cisco / ubr7200
- cisco / voice gateway as5800
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Cisco Systems 2504, 7500, 8510 Wireless LAN Controllers and Cisco Catalyst 6807-XL Switch with Wireless Services Module-2 (WiSM2) - Cisco Systems, Inc. - FIPS 140 2497 - historical
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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