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Case File

CVE-2021-29923

HIGH · CVSS 7.5 EPSS 3.77% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-07 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

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

CVE
CVE-2021-29923
Severity
HIGH
CVSS
7.5
EPSS
3.77%

Original NVD Description

Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.