Telnetd - Remote Code Execution (CVE-2020-10188)

Critical Nessus Plugin ID 136890

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VPR Score: 5.9


The remote telnetd service is affected by a buffer overflow vulnerability that could lead to remote code execution.


A buffer overflow condition exists in telnetd due to incorrect bounds checks in the services handling of short writes and urgent data. An unauthenticated, remote attacker can exploit this, via specially crafted telnet packets, to execute arbitrary code on the remote server.


Refer to your vendor advisory regarding this issue.

See Also

Plugin Details

Severity: Critical

ID: 136890

File Name: telnetd_cve-2020-10188_direct.nasl

Version: 1.6

Type: remote

Family: Misc.

Published: 2020/05/26

Updated: 2020/07/10

Dependencies: 10281

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS Score Source: CVE-2020-10188

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:netkit_telnet_project:netkit_telnet

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/03/06

Vulnerability Publication Date: 2020/03/06

Reference Information

CVE: CVE-2020-10188

IAVA: 2020-A-0293