CVE-2026-22318— Stack-Based Buffer Overflow in File Transfer Parameter Handling
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I. Basic Information for CVE-2026-22318
Vulnerability Information
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Vulnerability Title
Stack-Based Buffer Overflow in File Transfer Parameter Handling
Source: NVD (National Vulnerability Database)
Vulnerability Description
A stack-based buffer overflow vulnerability in the device's file transfer parameter workflow allows a high-privileged attacker to send oversized POST parameters, causing memory corruption in an internal process, resulting in a DoS attack.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
PHOENIX CONTACT FL NAT 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHOENIX CONTACT FL NAT是德国菲尼克斯电气（PHOENIX CONTACT）公司的一系列工业安全网关。 PHOENIX CONTACT FL NAT存在安全漏洞，该漏洞源于设备文件传输参数工作流程中存在基于栈的缓冲区溢出，可能导致高权限攻击者造成内存损坏，引发拒绝服务攻击。以下产品受到影响：FL NAT 2008、FL NAT 2208、FL NAT 2304-2GC-2SFP、FL SWITCH 2005、FL SWITCH 2008和FL SWITCH 2008F。
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-2026-22318
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Same Patch Batch · Phoenix Contact · 2026-03-18 · 8 CVEs total
| CVE-2026-22317 | 7.2 HIGH | Command Injection Vulnerability in Root CA Certificate Transfer Workflow |
| CVE-2026-22323 | 7.1 HIGH | Cross‑Site Request Forgery in Link Aggregation Configuration |
| CVE-2026-22322 | 7.1 HIGH | Stored Cross‑Site Scripting in Link Aggregation Name Handling |
| CVE-2026-22316 | 6.5 MEDIUM | Buffer Overflow using TFTP Filename |
| CVE-2026-22320 | 6.5 MEDIUM | Stack-Based Buffer Overflow in TFTP File-Transfer Command Handling over CLI |
| CVE-2026-22321 | 5.3 MEDIUM | Stack-Based Buffer Overflow in CLI Login Username Handling over CLI |
| CVE-2026-22319 | 4.9 MEDIUM | Stack-Based Buffer Overflow in File Install Parameter Handling |
IV. Related Vulnerabilities
Same product: FL SWITCH 2005
- CVE-2026-22323
Cross‑Site Request Forgery in Link Aggregation Configuration - CVE-2026-22322
Stored Cross‑Site Scripting in Link Aggregation Name Handlin - CVE-2026-22321
Stack-Based Buffer Overflow in CLI Login Username Handling o - CVE-2026-22320
Stack-Based Buffer Overflow in TFTP File-Transfer Command Ha - CVE-2026-22319
Stack-Based Buffer Overflow in File Install Parameter Handli
Same vendor: Phoenix Contact
- CVE-2024-43384
Phoenix Contact: Improper removal of sensitive information i - CVE-2026-22323
Cross‑Site Request Forgery in Link Aggregation Configuration - CVE-2026-22322
Stored Cross‑Site Scripting in Link Aggregation Name Handlin - CVE-2026-22321
Stack-Based Buffer Overflow in CLI Login Username Handling o - CVE-2026-22320
Stack-Based Buffer Overflow in TFTP File-Transfer Command Ha
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-2026-22318
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