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CVE-2026-2336— Weak webstax_auth Cookie Authentication Allows Privilege Escalation

Quick assessment

Affected
Microchip IStaX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microchip IStaX是美国Microchip公司的一个以太网交换机软件开发平台。 Microchip IStaX 2026.03之前版本存在安全漏洞，该漏洞源于共享设备cookie密钥泄露，可能导致权限提升。

AI Predicted 8.8 Difficulty: Easy EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2026-2336

Vulnerability Information
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Vulnerability Title
Weak webstax_auth Cookie Authentication Allows Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
A privilege escalation vulnerability in Microchip IStaX allows an authenticated low-privileged user to recover a shared per-device cookie secret from their own webstax_auth session cookie and forge a new cookie with administrative privileges.This issue affects IStaX before 2026.03.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Microchip IStaX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microchip IStaX是美国Microchip公司的一个以太网交换机软件开发平台。 Microchip IStaX 2026.03之前版本存在安全漏洞，该漏洞源于共享设备cookie密钥泄露，可能导致权限提升。
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

Vendor Product Affected Versions CPE Subscribe
Microchip IStaX 0 ~ 2026.03 -

II. Public POCs for CVE-2026-2336

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III. Intelligence Information for CVE-2026-2336

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IV. Related Vulnerabilities

Same vendor: Microchip
Same weakness: CWE-331

V. Comments for CVE-2026-2336

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