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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.

PUBLISHED Reserved 2026-02-11 | Published 2026-04-16 | Updated 2026-04-16 | Assigner Microchip




HIGH: 8.7CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H

Problem types

CWE-331 Insufficient entropy

Product status

Default status
unknown

Any version before 2026.03
affected

Credits

Rickard Jonsson finder

References

www.microchip.com/...calation-via-weak-cookie-authentication vendor-advisory

cve.org (CVE-2026-2336)

nvd.nist.gov (CVE-2026-2336)

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