CVE-2000-1055 describes a critical buffer overflow vulnerability in CiscoSecure ACS Server versions 2.4(2) and earlier. This flaw allows unauthenticated remote attackers to trigger a denial of service and potentially execute arbitrary code by sending a malformed, excessively large TACACS+ packet. With a CVSS score of 10.0, this vulnerability is highly severe, requiring no authentication or complex attack methods to achieve complete compromise of confidentiality, integrity, and availability. Despite its age and high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.1CPE matchmatch criteria | cpe:2.3:a:cisco:secure_access_control_server:2.1:*:windows_nt:*:*:*:*:* | ||
2.3\(3\)CPE matchmatch criteria | cpe:2.3:a:cisco:secure_access_control_server:2.3\(3\):*:windows_nt:*:*:*:*:* | ||
2.4\(2\)CPE matchmatch criteria | cpe:2.3:a:cisco:secure_access_control_server:2.4\(2\):*:windows_nt:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.