What’s Vulnerable › Vulnerabilities
CVE-2020-37166: AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-02-07 · updated 2026-06-17
- Weakness: CWE-120
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.
Affected products
References
- https://www.celestialsoftware.net/
- https://www.exploit-db.com/exploits/48010
- https://www.vulncheck.com/advisories/absolutetelnet-sshusername-denial-of-service
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