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Ubiquiti has disclosed 25 vulnerabilities across its UniFi ecosystem in Security Advisory Bulletin 066, affecting UniFi Connect, Talk, Access, Protect, Network Application, Protect Floodlight, and UniFi OS on UDM, UNVR, and UNAS devices. The most severe issue, CVE-2026-50746, carries a CVSS 10.0 rating and allows unauthenticated network-adjacent command injection in UniFi Connect, while several other flaws rated 9.9 can enable privilege escalation or full device compromise in UniFi Talk, UniFi Access, UniFi OS, and UniFi Protect. Ubiquiti also warned that CVE-2026-54403 in UniFi OS can be chained with other bugs to bypass low-privilege requirements, increasing the risk of broader compromise.
The disclosure aligns with broader Q2 2026 vulnerability trends showing attackers concentrating on internet-facing access points such as firewalls, VPNs, enterprise management panels, and authentication portals. AhnLab’s quarterly report highlighted UniFi OS among major enterprise-facing products affected during the quarter and noted that critical vulnerabilities and actively exploited flaws continued to rise, with 75 new entries added to CISA’s Known Exploited Vulnerabilities catalog. Ubiquiti has released patched versions for all affected products and said no interim workarounds are available, making immediate patching and tighter protection of exposed administrative interfaces the primary defenses.
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Ubiquiti disclosed 25 vulnerabilities across the UniFi ecosystem in Security Advisory Bulletin 066, including critical flaws affecting UniFi Connect, Talk, Access, Protect, Network Application, Protect Floodlight, and UniFi OS on UDM, UNVR, and UNAS devices. The company also provided patched versions for all affected products and said no interim workarounds are available.
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Ubiquiti released security updates for **UniFi OS** to fix five vulnerabilities affecting widely deployed products including **UniFi Cloud Gateway, UniFi Dream Machine, UNVR, NAS devices, consoles, and UniFi OS Server**. Three flaws—`CVE-2026-34908`, `CVE-2026-34909`, and `CVE-2026-34910`—were rated **CVSS 10.0** and could be exploited by remote, unauthenticated attackers to change system settings, read sensitive files through path traversal, or trigger command injection that could lead to remote code execution. Two additional issues, `CVE-2026-33000` and `CVE-2026-34911`, could also enable command injection, path traversal, privilege escalation, persistence, and data theft under certain conditions. The vulnerabilities were reported through **HackerOne**, and Ubiquiti said they can be exploited with low complexity, although it did not say whether they had been abused before patches were issued. Government and national CERT advisories, including Canada’s Cyber Centre and Germany’s dCERT, directed administrators to review Ubiquiti bulletin 064 and apply updated firmware and software versions immediately. The risk is amplified by the large number of Internet-exposed UniFi OS systems—reportedly close to **100,000**—because these appliances often sit at the network edge and can provide attackers with a path into internal environments if management interfaces are publicly reachable.
Jun 29, 2026
Ubiquiti released Security Advisory Bulletin 065 to address five vulnerabilities in **UniFi OS**, including critical path traversal (`CVE-2026-47368`), privilege escalation (`CVE-2026-47369`), and command injection (`CVE-2026-47370`) flaws that affect a wide range of consoles, gateways, servers, NVRs, NAS devices, Dream Machines, Cloud Keys, and Express products. The advisory says a network-adjacent attacker could abuse the bugs to read arbitrary files, escalate privileges, execute commands, and in some cases make unauthorized configuration changes through `CVE-2026-48610`, with several issues rated as high as **CVSS 9.9**. Ubiquiti warned that the vulnerabilities can be chained, allowing attackers to remove privilege requirements and potentially reach full device compromise, echoing broader concern over repeated severe UniFi OS weaknesses. Firmware updates were issued with fixes in **UniFi OS 5.1.15** for most affected families, **5.1.16** for **UNAS** devices, and **4.0.15** for **Express** appliances; security reporting around the bulletin also urged organizations to patch all listed CVEs together and treat previously exposed, unpatched management interfaces as potentially compromised.
Jul 12, 2026
Ubiquiti released **Security Advisory Bulletin 064** to fix five vulnerabilities in **UniFi OS**, including three **unauthenticated remote code execution** flaws tracked as `CVE-2026-34908`, `CVE-2026-34909`, and `CVE-2026-34910`, each described by community reporting as **CVSS 10.0** issues affecting a broad range of **UDM, UCG, and UNVR** devices. The advisory also addressed `CVE-2026-33000`, a **CVSS 9.1** command injection vulnerability in **UniFi OS Server** that can let an attacker with administrative privileges and network access execute arbitrary operating system commands and potentially gain **root-level control** over managed infrastructure. The command injection bug was reported through **HackerOne** by researcher **V3rlust**, and Ubiquiti said `UniFi OS Server 5.0.8` and later contain the fix, while `5.0.6` and earlier are confirmed vulnerable. Public reporting noted that roughly **87,196 exposed UniFi Network Application hosts** were visible from the internet, raising concern that the unauthenticated RCE flaws could be chained with the command injection issue to compromise internet-facing deployments; administrators were urged to update firmware immediately, restrict management-plane exposure, and verify patch status across deployed systems.
Jul 10, 2026