CVE-2026-77544
📛 CVE Title
CVE-2026-77544
Description
A malicious actor with access to the network could exploit an Out-of-bounds Write vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Ubiquiti
- CVSS severity
- HIGH
- CVSS score
- 7.5 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-787 - Reserved
- 2026-08-20
- Published
- 2026-09-22 18:34 UTC
- Last updated
- 2026-09-22 19:32 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/77xxx/CVE-2026-77544.json
- Linked Threat
- CVE-2026-77544 — CVE-2026-77544
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-22 19:16:51 UTC
- NVD last modified
- 2026-09-22 20:17:08 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: fe490ce8-0395-4072-90d8-2707e1bdf984
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
NVD / KEV / EPSS data refreshed 2026-09-23 02:40 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-84753 - Assigner
- Ubiquiti
- Published
- Sep 22, 2026, 6:34:39 PM
- Updated
- Sep 22, 2026, 7:32:21 PM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EUVD-reported EPSS
- 0.0000
- Vendors
- Ubiquiti Inc
- Products
-
UniFi Gateways (0 <5.1.26)Express 7 (0 <5.1.31)Dream Machines (0 <5.1.31)Enterprise Firewalls (0 <5.1.31)Dream Wall (0 <5.1.31)Dream Routers (0 <5.1.31)Cloud Gateways (0 <5.1.31)express (0 <4.0.21)
- Aliases
-
GHSA-cgjh-gg68-hw7w
ENISA description: A malicious actor with access to the network could exploit an Out-of-bounds Write vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.
Affected products (8)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Ubiquiti Inc | Dream Machines |
0 (affected)
|
— |
| Ubiquiti Inc | Enterprise Firewalls |
0 (affected)
|
— |
| Ubiquiti Inc | Dream Routers |
0 (affected)
|
— |
| Ubiquiti Inc | Cloud Gateways |
0 (affected)
|
— |
| Ubiquiti Inc | Dream Wall |
0 (affected)
|
— |
| Ubiquiti Inc | Express |
0 (affected)
|
— |
| Ubiquiti Inc | Express 7 |
0 (affected)
|
— |
| Ubiquiti Inc | UniFi Gateways |
0 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c fe490ce8-0395-4072-90d8-2707e1bdf984
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:sec.cloudapps.cisco.com
On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...
2026-09-23 15:15 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-23 15:15 UTC -
web:support.sap.com
SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.
2026-09-23 15:15 UTC -
web:support.sap.com
SAP Security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 8 th of September 2026 , SAP security patch day saw the release of 19 new security notes. There is 1 update to ...
2026-09-23 15:15 UTC -
web:vulmon.com
Vulnerability Summary A Denial of Service (DoS) attack may be executed on certain UniFi gateway devices. A malicious actor with network access can leverage an Out-of-bounds Write vulnerability to perform this attack.
2026-09-23 15:15 UTC -
web:www.mozilla.org
Bug 2045368 # CVE - 2026 -74959: Mitigation bypass in the Storage: Cache API component Reporter David Bors at Snyk Security Labs Impact moderate References Bug 2047853 # CVE - 2026 -74960: Site isolation issue in the WebExtensions component Reporter Khanh Nguyen Impact moderate References Bug 2049148 # CVE - 2026 -74961: Side-channel in the Web Audio ...
2026-09-23 15:15 UTC -
web:www.oracle.com
This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.
2026-09-23 15:15 UTC -
web:www.oracle.com
Additional CVEs addressed are: The patch for CVE - 2026 -34481 also addresses CVE - 2026 -34477, CVE - 2026 -34478, CVE - 2026 -34479, and CVE - 2026 -34480. Oracle Fusion Middleware Risk Matrix This Critical Security Patch Update contains 106 new security patches for Oracle Fusion Middleware. 53 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a ...
2026-09-23 15:15 UTC -
web:www.rapid7.com
CVE-2026-77544 : Ubiquiti Inc: A malicious actor with access to the network could exploit an Out-of-bounds Write vulnerability found in certain UniFi…. View severity, references, and remediation details from Rapid7.
2026-09-23 15:15 UTC -
web:www.tenable.com
A malicious actor with access to the network could exploit an Out-of-bounds Write vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.
2026-09-23 15:15 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-77544.json.
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