CVE-2020-12819
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I. Basic Information for CVE-2020-12819
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
FortiOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 FortiOS 5.6.12及之前版本，6.0.10及之前版本，6.2.4及之前版本，6.4.1及之前版本中存在安全漏洞，该漏洞允许攻击者使目标服务拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2020-12819
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Fortinet · 2024-12-19 · 7 CVEs total
| CVE-2021-26102 | 9.8 CRITICAL | Avfirewalls FortiWAN 授权问题漏洞 |
| CVE-2020-15934 | 8.6 HIGH | Fortinet FortiClient 安全漏洞 |
| CVE-2021-32589 | 7.7 HIGH | Fortinet FortiManager 和 Fortinet FortiAnalyzer 资源管理错误漏洞 |
| CVE-2021-26115 | 7.6 HIGH | Avfirewalls FortiWAN 操作系统命令注入漏洞 |
| CVE-2021-26093 | 6.6 MEDIUM | Fortinet FortiWLC 缓冲区错误漏洞 |
| CVE-2020-12820 | 5.4 MEDIUM | Fortinet FortiOS 缓冲区错误漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-122
- CVE-2026-8261
Squirrel sqobject.cpp Load heap-based overflow - CVE-2026-8213
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow - CVE-2026-8212
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading
V. Comments for CVE-2020-12819
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