CVE-2025-57437
Critical
Description
The Blackmagic Web Presenter HD firmware version 3.3 exposes sensitive information via an unauthenticated Telnet service on port 9977. When connected, the service reveals extensive device configuration data including: - Model, version, and unique identifiers - Network settings including IP, MAC, DNS - Current stream platform, stream key, and streaming URL - Audio/video configuration This data can be used to hijack live streams or perform network reconnaissance.
SeverityCritical
CVSS9.8
Exploit probability—
ProductBlackmagicdesign Web Presenter Hd Firmware
PublishedSep 22, 2025
First seenSep 22, 2025
Weakness typeCWE-200Sensitive information exposure
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| blackmagicdesign web_presenter_hd_firmware | 3.3 | — |
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