CVE-2026-54400
CRITICALCVSS 9.1/10EPSS 0.26%
Last modified
CVE-2026-54400 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ui | Unifi Access Application | < 4.2.29 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-54400?
A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.
How severe is CVE-2026-54400?
CVE-2026-54400 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2026-54400?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-54395MISP contains a reflected cross-site scripting vulnerability…5.3
- CVE-2026-54396An information disclosure vulnerability exists in the MISP A…5.3
- CVE-2026-54397A vulnerability in MISP’s non-REST event editing path allowe…6.1
- CVE-2026-54398An authorization flaw in MISP’s object add/edit handling all…5.3
- CVE-2026-54399Uncontrolled Resource Consumption vulnerability in the HTTP/…7.5
- CVE-2026-5440A memory exhaustion vulnerability exists in the HTTP server …7.5
- CVE-2026-54401A malicious actor with access to the network and low privile…8.8
- CVE-2026-54402A malicious actor with access to the network and low privile…8.8
- CVE-2026-54403A malicious actor with access to the network could exploit a…8.6
- CVE-2026-54404A malicious actor with access to the network and low privile…8.8
- CVE-2026-54405A malicious actor with access to the network could exploit a…7.5
- CVE-2026-54406A malicious actor with access to the network and high privil…8.7
Are you affected by CVE-2026-54400?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST