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CVE-2026-2336

Weak webstax_auth Cookie Authentication Allows Privilege Escalation

Published: Apr 16, 2026Updated: Aug 12, 2026 Sources: CVE List NVDCWE-331
8.8HIGH
NVD MITRE
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-331

Affected Products

Microchip
commercial·USaka microchip technology
IStaX
Hardware Firmware
and 1 more affected products View all →

Exploitability

Workaround Available
Is your org exposed to CVE-2026-2336?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/istax-privilege-escalation-via-weak-cookie-authentication
microchip.com

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