What’s Vulnerable › Vulnerabilities

CVE-2020-23622

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-08-15 · updated 2026-06-17
• Weakness: CWE-918

Description

An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked CALLBACK parameter in the request header

Affected products

• Cling Project Cling: from 2.0.0 through 2.1.2

References

• https://github.com/4thline/cling/issues/253
• https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true
• https://github.com/4thline/cling/issues/253
• https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true

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