CVE-2000-0268
Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2000-0268- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2000-0268- Updated
- 2026-11-02
EUVDEUVD-2000-0267 No score
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.
- Record
EUVD-2000-0267- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c43m-vj32-q46r No score
Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the...
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.
- Record
GHSA-c43m-vj32-q46r- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2000-0268 is a medium vulnerability (CVSS 5.0) in Cisco Ios, published April 20, 2000. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.66%, the 76th percentile. No source names a fixed version.