CVE-2021-47765

AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating username and error report fields. Attackers can trigger the crash by inserting 1000 characters into the username or email address fields, causing the application to become unresponsive.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

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/50510	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:celestialsoftware:absolutetelnet:11.24:*:*:*:*:*:*:*

History

17 Jun 2026, 04:18

Type	Values Removed	Values Added
Summary		(es) AbsoluteTelnet 11.24 contiene una vulnerabilidad de denegación de servicio que permite a atacantes locales bloquear la aplicación manipulando los campos de nombre de usuario e informe de error. Los atacantes pueden desencadenar el bloqueo insertando 1000 caracteres en los campos de nombre de usuario o dirección de correo electrónico, haciendo que la aplicación deje de responder.

26 Jan 2026, 16:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~6.2~~	v2 : unknown v3 : 5.5

21 Jan 2026, 22:28

Type	Values Removed	Values Added
First Time		Celestialsoftware Celestialsoftware absolutetelnet
CPE		cpe:2.3:a:celestialsoftware:absolutetelnet:11.24:::::::*
References	~~() https://www.celestialsoftware.net/ -~~	() https://www.celestialsoftware.net/ - Product
References	~~() https://www.exploit-db.com/exploits/50510 -~~	() https://www.exploit-db.com/exploits/50510 - Exploit, Third Party Advisory

15 Jan 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-15 16:16

Updated : 2026-06-17 04:18

NVD link : CVE-2021-47765

Mitre link : CVE-2021-47765

CVE.ORG link : CVE-2021-47765

JSON object : View

Products Affected

celestialsoftware

absolutetelnet

CWE

CWE-787

Out-of-bounds Write

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