CVE-2026-21639 json
A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote…
published 2026-01-08 10 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-1493
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Ubiquiti Inc airMAX AC 8.7.21
- Ubiquiti Inc airMAX M 6.3.24
- Ubiquiti Inc airFiber AF60-XG 1.2.3
- Ubiquiti Inc airFiber AF60 2.6.8
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CISA ADP | 3.1 | 5.4 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- Ubiquiti Inc airMAX AC
- Ubiquiti Inc airMAX M
- Ubiquiti Inc airFiber AF60-XG
- Ubiquiti Inc airFiber AF60
Classification
References
Sources
- CVE List CVE-2026-21639
- NVD CVE-2026-21639
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