Some telnet clients allow remote telnet servers to request environment variables from the client that may contain sensitive information, or remote web servers to obtain the information via a telnet: URL.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6644
Source: Mitre, NVD
Published: 2001-07-21
Updated: 2026-06-16
Base Score: 2.6
Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
EPSS: 0.00662