[UPDATE] [high] Ubiquiti UniFi: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Ubiquiti UniFi to execute arbitrary code, conduct an SQL injection attack, escalate privileges, bypass security measures, conduct a denial of service attack, manipulate data, and disclose information.
CSIRTS triage
- What
- Multiple vulnerabilities can allow arbitrary code execution, SQL injection, privilege escalation, and more.
- Who is affected
- Deployments of Ubiquiti UniFi.
- Urgency
- Remediation is urgent due to the high severity and potential for exploitation.
- Action
- Apply the latest security updates for Ubiquiti UniFi.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2171
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Moderate exploitation riskCVE-2026-507462.5% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 84% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-507470.49% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-507481.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 66% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544000.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544010.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-544021.3% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 68% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544030.62% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544040.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544050.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-544060.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownNCSC-2026-0221 [1.00] [M/H] Vulnerabilities fixed in UniFi products from Ubiquiti Networksncsc-nl
- highCVE-2026-56842: A malicious actor with access to the network and under certain conditions could exploit an Inc…nvd
- highCVE-2026-56841: A malicious actor with access to the network and low privileges could exploit an authenticated…nvd
- highCVE-2026-55119: A malicious actor with access to the network and low privileges could exploit an Improper Acce…nvd
- highCVE-2026-55118: A malicious actor with access to the network,low privileges and under certain conditions could…nvd
- highCVE-2026-55117: A malicious actor with access to the network could exploit a Path Traversal vulnerability foun…nvd
- criticalCVE-2026-55116: A malicious actor with access to the network and under certain network configurations could ex…nvd
- criticalCVE-2026-55115: A malicious actor with access to the network and low privileges could exploit a Server-Side Re…nvd
- highCVE-2026-55114: A malicious actor with access to the network and low privileges could exploit an Improper Acce…nvd
- highCVE-2026-55113: A malicious actor with access to the network could exploit a Server-Side Request Forgery (SSRF…nvd
- highCVE-2026-55112: A malicious actor with access to the network and low privileges and under certain conditions c…nvd
- highCVE-2026-55111: A malicious actor with access to the network could exploit a Path Traversal vulnerability foun…nvd
Recent advisories for Ubiquiti UniFi
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownNCSC-2026-0330 [1.00] [M/H] Kwetsbaarheden verholpen in UniFi-producten van Ubiquitincsc-nl · 2026-08-27
- unknownNCSC-2026-0221 [1.00] [M/H] Vulnerabilities fixed in UniFi products from Ubiquiti Networksncsc-nl · 2026-07-07
- criticalexploitedCVE-2026-34908: Ubiquiti UniFi OS Improper Access Control Vulnerabilitycisa-kev · 2026-06-23
- criticalexploitedCVE-2026-34910: Ubiquiti UniFi OS Improper Input Validation Vulnerabilitycisa-kev · 2026-06-23
- criticalexploitedCVE-2026-34909: Ubiquiti UniFi OS Path Traversal Vulnerabilitycisa-kev · 2026-06-23
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