CVE-2021-33516

HighCVSS 8.1/10Last modified Jun 17, 2026

Description

An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before 1.2.5. It allows DNS rebinding. A remote web server can exploit this vulnerability to trick a victim's browser into triggering actions against local UPnP services implemented using this library. Depending on the affected service, this could be used for data exfiltration, data tempering, etc.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected software

No affected versions have been published.

Timeline

Published
May 24, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-33516: High severity, CVSS 8.1 | Vulnix