CVE-2026-21638
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.4%
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.
Affected Products:
UBB-XG (Version 1.2.2 and earlier)
UDB-Pro/UDB-Pro-Sector (Version 1.4.1 and earlier)
UBB (Version 3.1.5 and earlier)
Mitigation:
Update your UBB-XG to Version 1.2.3 or later.
Update your UDB-Pro/UDB-Pro-Sector to Version 1.4.2 or later.
Update your UBB to Version 3.1.7 or later.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H