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CVE-2026-22903— Stack Overflow via SESSIONID Cookie in lighttpd

CVSS 9.8 · Critical EPSS 0.68% · P72
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I. Basic Information for CVE-2026-22903

Vulnerability Information
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Vulnerability Title
Stack Overflow via SESSIONID Cookie in lighttpd
Source: NVD (National Vulnerability Database)
Vulnerability Description
An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
WAGO Industrial-Managed-Switch 0852-1322和WAGO Industrial-Managed-Switch 0852-1328 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WAGO Industrial-Managed-Switch 0852-1322和WAGO Industrial-Managed-Switch 0852-1328都是德国万可（WAGO）公司的一个工业级管理型以太网交换机。 WAGO Industrial-Managed-Switch 0852-1322和WAGO Industrial-Managed-Switch 0852-1328存在安全漏洞，该漏洞源于解析包含过长SESSIONID cookie的特制HTTP请求时存在栈缓冲区溢出，可能导致服务崩溃和
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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
WAGO0852-1322 0.0.0 ~ 2.64 -
WAGO0852-1328 0.0.0 ~ 2.64 -
WAGO0852-1322 2.64 -
WAGO0852-1328 2.64 -

II. Public POCs for CVE-2026-22903

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III. Intelligence Information for CVE-2026-22903

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Same Patch Batch · WAGO · 2026-02-09 · 4 CVEs total

CVE-2026-229069.8 CRITICALHardcoded Key Allows Credential Disclosure
CVE-2026-229049.8 CRITICALStack Overflow via Oversized Cookie Fields in lighttpd
CVE-2026-229057.5 HIGHAuthentication Bypass via URI Traversal

IV. Related Vulnerabilities

Same product: 0852-1322
Same vendor: WAGO
Same weakness: CWE-121

V. Comments for CVE-2026-22903

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