[NEW] [high] Ubiquiti UnifiOS: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Ubiquiti UnifiOS to execute arbitrary code, escalate privileges, and bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities in UnifiOS allow remote code execution, privilege escalation, and security bypass.
- Who is affected
- All Ubiquiti UnifiOS deployments are affected.
- Urgency
- High priority; multiple critical attack vectors present including RCE and privilege escalation warrant immediate remediation.
- Action
- Check Ubiquiti security advisories for affected version ranges and apply available patches immediately.
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-2026-3028
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-2026-775331.0% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 61% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775340.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775350.81% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775360.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775370.94% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 58% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775380.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775390.81% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775400.81% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775410.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-775420.81% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownNCSC-2026-0330 [1.00] [M/H] Kwetsbaarheden verholpen in UniFi-producten van Ubiquitincsc-nl
- criticalCVE-2026-77557: A malicious actor with access to the network could exploit an Improper Access Control vulnerab…nvd
- criticalCVE-2026-77554: A malicious actor with access to the network could exploit an Improper Input Validation vulner…nvd
- criticalCVE-2026-77553: A malicious actor with access to the network and low privileges could exploit an Improper Acce…nvd
- criticalCVE-2026-77552: A malicious actor with access to the network could exploit an Improper Input Validation vulner…nvd
- criticalCVE-2026-77551: A malicious actor with access to the network and under certain conditions could exploit an Imp…nvd
- criticalCVE-2026-77550: A malicious actor with access to the network could exploit an Improper Neutralization of CRLF …nvd
- criticalCVE-2026-77549: A malicious actor with access to the network and under certain conditions could exploit an Imp…nvd
- criticalCVE-2026-77548: A malicious actor with access to the network and low privileges could exploit an Improper Inpu…nvd
- criticalCVE-2026-77547: A malicious actor with access to the network and low privileges could exploit an Improper Inpu…nvd
- criticalCVE-2026-77546: A malicious actor with access to the network and low privileges could exploit an Improper Inpu…nvd
- criticalCVE-2026-77545: A malicious actor with access to the network, low privileges and under certain conditions coul…nvd
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