AUGUST 4, 2026
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Case File

CVE-2021-3466

CRITICAL · CVSS 9.8 EPSS 8.74%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-25 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It may be remotely exploitable.

CVE
CVE-2021-3466
Severity
CRITICAL
CVSS
9.8
EPSS
8.74%

Original NVD Description

A flaw was found in libmicrohttpd. A missing bounds check in the post_process_urlencoded function leads to a buffer overflow, allowing a remote attacker to write arbitrary data in an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Only version 0.9.70 is vulnerable.

Related CVEs

Other vulnerabilities affecting the same vendor(s)