CVE-2020-12820
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2020-12820
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.
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
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Fortinet FortiOS 缓冲区错误漏洞
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 SSL VPN 5.6.12及之前版本，6.0.10及之前版本中存在安全漏洞，该漏洞源于缓冲区溢出，该漏洞允许攻击者通过SSL VPN身份验证的远程攻击者使FortiClient崩溃。
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-2020-12820
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2020-12820
请登录查看更多情报信息。
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-2020-12819 | 5.4 MEDIUM | FortiOS 安全漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2020-12820
No comments yet