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CVE-2026-90450

Published: Sep 11, 2026Updated: Sep 14, 2026 Sources: CVE List NVD csafCWE-863
5.4MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 87.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

The application's role-authorization lookup defaults to granting access when a request handler's name is not present in its table of role requirements, rather than defaulting to deny. Any request handler that is not explicitly registered in this table is reachable by any authenticated user regardless of their assigned role, and any newly added handler is fail-open by default until explicitly added to the table.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-863

Affected Products

CISA
oss-projectaka thorium, icsnpp-ethercat, industrial control systems network protocol parsers (icsnpp) - ethercat plugin for zeek
MalcolmOn-prem
ICS / OT / IoT / industrial-network

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
cisa.gov
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
cisa.gov
and 56 more references View all →

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