CVE-2025-57432

Description

Blackmagic Web Presenter version 3.3 exposes a Telnet service on port 9977 that accepts unauthenticated commands. This service allows remote attackers to manipulate stream settings, including changing video modes and possibly altering device functionality. No credentials or authentication mechanisms are required to interact with the Telnet interface.

CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-306 Missing Authentication

Affected Products

Vendor	Product	Versions
blackmagicdesign	web_presenter_hd_firmware	All
blackmagicdesign	web_presenter_hd	All
blackmagicdesign	web_presenter_4k_firmware	All
blackmagicdesign	web_presenter_4k	All

References

Exploits

https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-57432 https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-57432

Other References

https://www.blackmagicdesign.com/

Frequently Asked Questions

What is CVE-2025-57432? +

Blackmagic Web Presenter version 3.3 exposes a Telnet service on port 9977 that accepts unauthenticated commands. This service allows remote attackers to manipulate stream settings, including changing video modes and possibly altering device functionality. No credentials or authentication mechanisms are required to interact with the Telnet interface. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-57432? +

CVE-2025-57432 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-57432? +

CVE-2025-57432 affects products from blackmagicdesign, specifically: web_presenter_4k, web_presenter_4k_firmware, web_presenter_hd, web_presenter_hd_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-57432? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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