VULNERABILITY INTELLIGENCE

CVE-2021-3466

CVSS score9.8 CRITICAL
EPSS probability8.74%
CISA KEVNot currently listed
Published2021-03-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-120

Primary references