Buffer overflow in Ubiquiti Inc Edgemax Edgeswitch

CVE-2026-77532

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-77532: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-77532?
CVE-2026-77532 is a critical-severity vulnerability in Ubiquiti Inc Edgemax Edgeswitch, classified under Heap-based Buffer Overflow. CVSS score: 9.6/10. Published 2026-08-26.
How severe is CVE-2026-77532?
Critical severity. CVSS v3 base score is 9.6 out of 10.