Vulnerability · Published Jan 15, 2026 · Assigned by VulnCheck
CVE-2021-47764AbsoluteTelnet 11.24 - 'Phone' Denial of Service (PoC)
Medium 5.5
In plain English
A medium-severity out-of-bounds write in AbsoluteTelnet from Celestialsoftware. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Celestialsoftware | AbsoluteTelnet | 11.24 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- ExploitDB-50511 exploit
- Vendor Homepage product