Improper access control in SystemUI prior to SMR Sep-2026 Release 1 allows local attackers to launch arbitrary activity. (CVE-2026-21100)
CVE-2026-21100 is an improper access control vulnerability in SystemUI prior to the SMR Sep-2026 Release 1. It allows local attackers to launch arbitrary activities on affected systems. The vulnerability has a medium severity rating and no known exploits in the wild have been reported. No patch or remediation details are currently available.
AI Analysis
Technical Summary
This vulnerability involves improper access control in the SystemUI component before the SMR Sep-2026 Release 1, enabling local attackers to launch arbitrary activities. The issue is classified as moderate severity with no known exploitation in the wild. No specific affected versions or patch information have been provided, and the vendor advisory status is not confirmed.
Potential Impact
Local attackers can exploit this vulnerability to launch arbitrary activities, potentially leading to unauthorized actions within the affected system. The severity is assessed as medium, indicating a moderate impact on confidentiality, integrity, or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to trusted users only to reduce risk.
Improper access control in SystemUI prior to SMR Sep-2026 Release 1 allows local attackers to launch arbitrary activity. (CVE-2026-21100)
Description
CVE-2026-21100 is an improper access control vulnerability in SystemUI prior to the SMR Sep-2026 Release 1. It allows local attackers to launch arbitrary activities on affected systems. The vulnerability has a medium severity rating and no known exploits in the wild have been reported. No patch or remediation details are currently available.
CVSS v4.0
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper access control in the SystemUI component before the SMR Sep-2026 Release 1, enabling local attackers to launch arbitrary activities. The issue is classified as moderate severity with no known exploitation in the wild. No specific affected versions or patch information have been provided, and the vendor advisory status is not confirmed.
Potential Impact
Local attackers can exploit this vulnerability to launch arbitrary activities, potentially leading to unauthorized actions within the affected system. The severity is assessed as medium, indicating a moderate impact on confidentiality, integrity, or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to trusted users only to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p335-hmw8-f84q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-21100"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
Threat ID: 6aa15f7aacd9273b49618337
Added to database: 09/09/2026, 13:30:34 UTC
Last enriched: 09/09/2026, 13:56:27 UTC
Last updated: 09/09/2026, 20:51:59 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.