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CVE Vulnerability Details :
CVE-2021-47764
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-15 Jan, 2026 | 15:52
Updated At-18 Feb, 2026 | 20:27
Rejected At-
▼CVE Numbering Authority (CNA)
AbsoluteTelnet 11.24 - 'Phone' Denial of Service (PoC)

AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating DialUp connection and license name fields. Attackers can generate a 1000-character payload and paste it into specific input fields to trigger application crashes and force unexpected termination.

Affected Products
Vendor
Celestialsoftware
Product
AbsoluteTelnet
Versions
Affected
  • 11.24
Problem Types
TypeCWE IDDescription
CWECWE-787Out-of-bounds Write
Type: CWE
CWE ID: CWE-787
Description: Out-of-bounds Write
Metrics
VersionBase scoreBase severityVector
4.06.7MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version: 4.0
Base score: 6.7
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Yehia Elghaly
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.exploit-db.com/exploits/50511
exploit
https://www.celestialsoftware.net/
product
Hyperlink: https://www.exploit-db.com/exploits/50511
Resource:
exploit
Hyperlink: https://www.celestialsoftware.net/
Resource:
product
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Details not found