AUGUST 4, 2026
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Case File

CVE-2021-3716

LOW · CVSS 3.1 EPSS 0.58%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-03-02 · Last synced 2026-08-04

CyberRota Analysis

This is a low severity vulnerability with a CVSS score of 3.1. See the original NVD description below for full technical details.

CVE
CVE-2021-3716
Severity
LOW
CVSS
3.1
EPSS
0.58%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)