AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2018-20721

CRITICAL · CVSS 9.8 EPSS 2.05% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-01-16 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2018-20721
Severity
CRITICAL
CVSS
9.8
EPSS
2.05%

Original NVD Description

URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address.

Related CVEs

Other vulnerabilities affecting the same vendor(s)