Back to Database
Status published
Medium
CVE-2000-0268
Cisco IOS 11.x and 12.x allows remote attackers to cause...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2000-0268
Credits & Attribution
No credits recorded in the NVD database.
References
More from cisco
View All →CVE-2025-27091
OpenH264 Decoding Functions Heap Overflow Vulnerability
High
8.6
CVE-2023-25653
Improper calculations in ECC implementation can trigger a Denial-of-Service (DoS)
High
7.5
CVE-2021-33478
The TrustZone implementation in certain Broadcom MediaxChange firmware could allow...
Medium
6.8
CVE-2020-16139
A denial-of-service in Cisco Unified IP Conference Station 7937G 1-4-4-0...
High
7.5
CVE-2020-16138
A denial-of-service issue in Cisco Unified IP Conference Station 7937G...
High
7.5
Affected Vendor
cisco
View all reports →Affected Software
ios, accesspath, as5200, as5300, as5800, system controller 3640, voice gateway as5800, 3660 router, 7100 router, 7200 router, 7500 router, ubr7200
Vulnerable Versions:
11.3aa, 12.0\(2\), 12.0\(2\)xc, 12.0\(2\)xd, 12.0\(2\)xf, 12.0\(2\)xg, 12.0\(3\)t2, 12.0\(4\), 12.0\(4\)s, 12.0\(4\)t, 12.0\(5\), 12.0\(6\), 12.0\(7\)t, ls-3, ts-3, vs-3
Timeline
Official Publish:
June 2nd, 2000
Last Modified:
August 8th, 2024
Added to House:
July 17th, 2026
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.