CVE-2020-37166

AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.celestialsoftware.net/	Product
https://www.exploit-db.com/exploits/48010	Exploit Third Party Advisory VDB Entry
https://www.vulncheck.com/advisories/absolutetelnet-sshusername-denial-of-service	Broken Link

Configurations

Configuration 1 (hide)

cpe:2.3:a:celestialsoftware:absolutetelnet:11.12:*:*:*:*:*:*:*

History

19 Feb 2026, 18:52

Type	Values Removed	Values Added
CPE		cpe:2.3:a:celestialsoftware:absolutetelnet:11.12:::::::*
References	~~() https://www.celestialsoftware.net/ -~~	() https://www.celestialsoftware.net/ - Product
References	~~() https://www.exploit-db.com/exploits/48010 -~~	() https://www.exploit-db.com/exploits/48010 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.vulncheck.com/advisories/absolutetelnet-sshusername-denial-of-service -~~	() https://www.vulncheck.com/advisories/absolutetelnet-sshusername-denial-of-service - Broken Link
First Time		Celestialsoftware Celestialsoftware absolutetelnet

07 Feb 2026, 00:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-07 00:15

Updated : 2026-02-19 18:52

NVD link : CVE-2020-37166

Mitre link : CVE-2020-37166

CVE.ORG link : CVE-2020-37166

JSON object : View

Products Affected

celestialsoftware

absolutetelnet

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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