Gold Open Source
ExplorePackagesVulnerabilitiesMCP Servers
Login
Gold Open Source

The authoritative source for production-ready open-source components. Every package, container image, AI model, and MCP server undergoes rigorous verification for security, malware, and license compliance.

Explore Gold

  • Explore Everything
  • Packages
  • Gold Packages
  • Container Images
  • AI Models
  • MCP Servers
  • Agent Skills
  • Chip Manufacturers

Security Data & Tools

  • Scan Your Dependencies
  • Trending Threats
  • Threat RSS Feeds
  • CVE Database
  • Actively Exploited (KEV)
  • SGZ Zero-Days
  • CWE Index
  • MITRE ATT&CK
  • Malicious Packages
  • Security Glossary
  • Supply-Chain Report
  • Developers (API & Badge)
  • Chrome Extension
  • Credits & Data Sources

Products

  • The Platform
  • ESSCM
  • Portal
  • TPRM
  • OSM
  • Cowork
  • Code / Runner
  • Guard

Use Cases

  • Know Your Software
  • Auto-Fix Vulnerabilities
  • Asset Discovery
  • AI Governance
  • MCP Server Security
  • Supply Chain Compliance
  • Zero-Day Discovery
  • All Use Cases

Company

  • About
  • Pricing
  • Blog
  • Documentation
  • Safeguard Academy
  • Contact
  • Privacy Policy
  • Terms of Service

© 2026 Gold Open Source. All rights reserved.

Built with care bySafeguard
Home/CWEs/CWE-120
Common Weakness Enumeration

CWE-120: Classic Buffer Overflow

ShareXLinkedInRedditHN

Input is copied into a buffer without checking its size.

Abstraction
Base
OWASP Top 10
A06:2021 (#6)
Exploit Likelihood
High
Related CVEs
26

How to mitigate

Replace unbounded copies (strcpy, sprintf) with length-bounded equivalents; validate lengths first.

▪ References & documentation

https://cwe.mitre.org/data/definitions/120.htmlNVD CWE listing

▪ Related CVEs

CVE-2015-7747High

Security vulnerability in AudioFile

CVE-2026-27942High

Security vulnerability in fast-xml-parser

CVE-2026-27942High

Security vulnerability in fast-xml-parser

CVE-2026-27942High

Security vulnerability in fast-xml-parser

CVE-2026-27942High

Security vulnerability in fast-xml-parser

CVE-2026-27942High

Security vulnerability in fast-xml-parser

CVE-2023-39206Low

Security vulnerability in zoom

CVE-2023-39204Medium

Security vulnerability in zoom

CVE-2025-49464Medium

Security vulnerability in zoom

CVE-2025-46789Medium

Security vulnerability in zoom

CVE-2014-0195Medium

Security vulnerability in openssl

CVE-2021-3711Critical

Security vulnerability in openssl

CVE-2016-8620Medium

Security vulnerability in curl

CVE-2026-27459Critical

Security vulnerability in pyopenssl

GHSA-5pwr-322w-8jr4Critical

Security vulnerability in pyopenssl

CVE-2014-0195Medium

Security vulnerability in openssl

CVE-2021-3711Critical

Security vulnerability in openssl

CVE-2021-42728High

Security vulnerability in bridge

CVE-2021-36075High

Security vulnerability in bridge

CVE-2026-27820Critical

Security vulnerability in zlib

CVE-2011-2690High

Security vulnerability in LibPng

CVE-2010-1205Critical

Security vulnerability in LibPng

CVE-2025-28162Medium

Security vulnerability in LibPng

CVE-2026-27820Critical

Security vulnerability in Zlib

CVE-2015-8126High

Security vulnerability in LibPng

CVE-2019-16536High

Security vulnerability in clickhouse