CVE-2020-37166
AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service
- State
- Published
- Severity
- 6.9 Medium
- Published
- Feb 6, 2026
- Updated
- Oct 1, 2026
- Reserved
- Feb 6, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.2 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Products
| Product | Versions |
|---|---|
AbsoluteTelnetCelestial Software |
|
References
- ExploitDB-48010exploit
- Vendor Homepageproduct
- VulnCheck Advisory: AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Servicethird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.