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

Published Apr 16, 2026
·
Updated

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.

Affected Software

1 affected component
Microchip IStaX<2026.03

Event History

Apr 16, 2026
CVE Published
via MITRE·05:02 PM
Data Sourced
via MITRE·05:02 PM
DescriptionWeakness
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-2336?

CVE-2026-2336 has a high severity rating due to its potential for privilege escalation.

2

How do I fix CVE-2026-2336?

To fix CVE-2026-2336, update Microchip IStaX to a version later than 2026.03 to mitigate the vulnerability.

3

Who is affected by CVE-2026-2336?

CVE-2026-2336 affects users of Microchip IStaX versions up to 2026.03.

4

What type of vulnerability is CVE-2026-2336?

CVE-2026-2336 is a privilege escalation vulnerability related to weak cookie authentication.

5

Can CVE-2026-2336 allow an unauthorized user to gain admin access?

Yes, CVE-2026-2336 allows an authenticated low-privileged user to forge an administrative cookie, enabling unauthorized access.

Contact

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