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A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.

🗓️ 02 Oct 2025 06:11:11Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 1 Views

A flaw in a network block device tool lets a man in the middle inject a text reply across start TLS risking disruption.

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02 Oct 2025 06:11Current
7High risk
Vulners AI Score7
CVSS 3.13.1
CVSS 23.5
EPSS0.00082
1