What’s Vulnerable › Vulnerabilities

CVE-2020-37164: AbsoluteTelnet 11.12 - "license entry" Denial of Service

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% 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 that allows local attackers to crash the application by supplying an oversized license name. Attackers can generate a 2500-character payload and paste it into the license entry field to trigger an application crash.

Affected products

• Celestial Software AbsoluteTelnet: through 11.12

References

• https://www.celestialsoftware.net/
• https://www.exploit-db.com/exploits/48005
• https://www.vulncheck.com/advisories/absolutetelnet-license-entry-denial-of-service

Get alerted when CVE-2020-37164 or the next vulnerability affects your stack