CVE-2026-77532
Ubiquiti EdgeMAX EdgeSwitch Buffer Overflow Vulnerability
Description
A malicious actor with access to an adjacent network could exploit a Buffer Overflow vulnerability found in a DHCPv6-enabled EdgeMAX EdgeSwitch to initiate a Remote Code Execution on such device.
INFO
Published Date :
Aug. 26, 2026, 11:16 a.m.
Last Modified :
Oct. 14, 2026, 2:17 a.m.
Remotely Exploit :
No
Source :
fe490ce8-0395-4072-90d8-2707e1bdf984
Affected Products
The following products are affected by CVE-2026-77532
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | fe490ce8-0395-4072-90d8-2707e1bdf984 | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | fe490ce8-0395-4072-90d8-2707e1bdf984 |
Solution
- Update device firmware to the latest version.
- Disable DHCPv6 if not actively used.
- Apply vendor-provided security patches promptly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-77532.
| URL | Resource |
|---|---|
| https://uisp.community.ui.com/releases/Security-Advisory-Bulletin-068-068/b95ea5e8-1a80-4ffc-ad42-625eae300cc9 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-77532 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-77532
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-77532 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-77532 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by fe490ce8-0395-4072-90d8-2707e1bdf984
Oct. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Removed CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-77532', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-26T12:31:49.192604Z'} -
New CVE Received by fe490ce8-0395-4072-90d8-2707e1bdf984
Aug. 26, 2026
Action Type Old Value New Value Added Description A malicious actor with access to an adjacent network could exploit a Buffer Overflow vulnerability found in a DHCPv6-enabled EdgeMAX EdgeSwitch to initiate a Remote Code Execution on such device. Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-122 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/77xxx/CVE-2026-77532.json">CVE-2026-77532</a> Added Reference https://uisp.community.ui.com/releases/Security-Advisory-Bulletin-068-068/b95ea5e8-1a80-4ffc-ad42-625eae300cc9