PT-2026-33346 · Microchip · Istax

Rickard Jonsson · CVE-2026-2336 · Published 2026-04-16 · Updated 2026-04-17

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Microchip IStaX versions prior to 2026.03

Description An authenticated low-privileged user can recover a shared per-device cookie secret from their own webstax auth session cookie. This allows the user to forge a new cookie with administrative privileges, leading to privilege escalation.

Recommendations Update to version 2026.03.

Fix

LPE

Weakness Enumeration

CWE-331

Related Identifiers

CVE-2026-2336

Affected Products

Istax

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-2336 · Security Note
• https://microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/istax-privilege-escalation-via-weak-cookie-authentication · Vendor Advisory
• https://twitter.com/CVEnew/status/2045102669950304316 · Twitter Post