Skip to main content
VulnerabilityPublished

CVE-2025-57437: Information Exposure

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Immediate mitigation steps include restricting network access to the Telnet port 9977 by implementing firewall rules or network segmentation to limit connectivity only to trusted management hosts. Organizations should disable the Telnet service if possible or replace it with a secure management interface such as SSH with strong authentication. Monitoring network traffic for unusual connections to port 9977 can help detect exploitation attempts. Since no official patches are available, organizations should engage with Blackmagic Design support to inquire about firmware updates addressing this issue and apply them promptly once released. Additionally, rotating streaming keys and URLs after mitigating the vulnerability can prevent unauthorized stream hijacking. Implementing network intrusion detection systems (NIDS) to alert on suspicious Telnet activity and conducting regular security audits of streaming infrastructure are recommended. Finally, educating operational staff about this vulnerability and enforcing strict access controls around streaming devices will reduce exposure.

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.

References

Community reviews

Loading reviews…