CVE-2026-2336 HIGH

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

Vendor Microchip
Product IStaX
Weakness CWE-331
Published April 16, 2026
Last update April 16, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 16, 2026 CVE published
April 16, 2026 Record updated