CVE-2026-77549

criticalpriority · track · 0EPSS 0.005 · 43 %ileDENL

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.51% (43rd) EPSS

CVSS 9 · critical

Is it mine?

21 products

Check your exposure

Who says so?

2 sources

cert_bund · ncsc_nl

EPSS · scored 2026-10-26

A malicious actor with access to the network and under certain conditions could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.

cvss

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.2–9

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondaryexploitability 2.2 · impact 6

v3.18.2highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-93USCWE-93US

affected products (21)

Products and version ranges known to be affected.

Ubiquiti UniFi OSall versionscert_bundDEcpe:/a:ubnt:unifi:os
Ubiquiti Inc Cloud Gateways≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Cloud Keys≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Dream Machines≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Dream Routers≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Dream Wall≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Enterprise Firewall Core≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Enterprise Fortress Gateway≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Enterprise Network Attached Storage≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Enterprise Network Video Recorders≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Express 7≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Network Attached Storage≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc Network Video Recorders≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UID Enterprise Agent≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi Access Application≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi Connect Application≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi Enterprise Audio/Video Bridge≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi OS Server≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi Protect AI Key≤ vers:unknown/*ncsc_nlNL
Ubiquiti Inc UniFi Talk application≤ vers:unknown/*ncsc_nlNL

showing 20 of 21

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0330Kwetsbaarheden verholpen in UniFi-producten van UbiquitiNL2026-08-27csaf · ncsc_nlNL
Ubiquiti heeft kwetsbaarheden verholpen in verschillende UniFi-producten, waaronder UniFi Protect, UniFi OS, UniFi Network Application, UniFi Connect, UniFi Access Application, UniFi OS Server, UID Enterprise Agent, UniFi Connect Display Cast Pro, UniFi Enterprise Audio/Video Bridge en UniFi Talk.
WID-SEC-W-2026-3028Ubiquiti UnifiOS: Mehrere SchwachstellenDeutsch2026-08-25csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Ubiquiti UnifiOS ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen und um Sicherheitsvorkehrungen zu umgehen.

sources

Which sources assert this record, and when.

cert_bund ncsc_nl NVD CVE.org MITRE

published 2026-08-26modified 2026-08-28

references (1) nvd

External citations — patches, advisories, analysis.

https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9

scry

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